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geometry
radical axis-1
the golden ratio (and aphrodite's phi)
rose curves
angles between parallels...
measuring angles...
the lune of Hippocrates
pythagorean theorem (a puzzle)
the lunes of Alhazen
triangle angle-sum theorem
pythagorean spiral
geometric constructions - 13
power of a point
Fibonacci spiral
square vs rhombus
geometric constructions - 12
geometric constructions - 11
geometric constructions - 2
archimedes' arbelos
a prism inside a prism...
reflections...
area of a trapezoid
ptolemy's theorems
pythagorean and galileo's law
area of a triangle
area of a parallelogram
area of a rectangle
approximating pi
constructing a hyperbola...
constructing an ellipse...
constructing a parabola
a pyramid inside a cube...
a math trick-2
angles in a circle...
tux walks up and down...
a triangle
quadrilaterals
square roots in a greek way...
Thales' theorem
regular octagon
angle bisector
inscribed quadrilaterals
tangent at a point
tangent lines to a circle
double reflection
triangles...
a decagon
the intersept (thales) theorem
midpoint parallelogram
classifying triangles...
the reflective property of parabola
the reflective property of ellipse
the reflective property of hyperbola
point symmetry
the angle bisector theorems
the triangle inequality
triangle midpoint theorem
reflections-2
areas inside a parallelogram
areas inside a trapezoid
archimedes' spiral
reflections-3
involute of a circle
cardioid
reflections-4
pythagorean theorem (proof)
tangent-chord angle
area of a kite
median to the hypotenuse
areas of similar triangles
equilateral triangle (SAS)
find the slope
a proof of pythagorean theorem-4
measurements in a circle
the relative position of two circles
a cube...
regular tetrahedron
hexagonal prism
square pyramid
the outer Napoleon triangle
a pyramid inside a cube-1
reflections of a triangle
the golden ratio
central and inscribed angles
sierpinski triangles
find the area
regular polygons
an identity...
an identity-2
triangle-1
area of a rectangle-1
simson line
nine-point circle
angle bisector as locus
incircle and excircles of a triangle
regular polygons-1
an archimedes' formula
area of a circle
area of a circle-1
radians
properties of a rhombus
properties of a rectangle
properties of a trapezoid
properties of a square
axis of symmetry
point of symmetry
equal chords
properties of an isosceles trapezoid
an isosceles triangle...
properties of a kite
cuboid
a tank with a tap
find the angles
find the angle
an equilateral triangle
sum of the interior angles of a n-gon
a Reuleaux triangle
congruent triangles
area of an equilateral triangle
the witch of agnesi
the cissoid of diocles
deltoid
astroid
nephroid
ranunculoid
conchoid of nicomedes
limacon of pascal
cycloids
trammel of archimedes
generalization (pappus) of pythagorean
conchoid of a circle
piriform
ratio of areas-1
ratio of areas-2
division of a segment
an apollonian circle
parabolas
ellipses
hyperbolas
a definition of conics (directrix)
ellipse as a hypotrochoid
ellipses and hyperbolas
eight curve (construction)
radical axis-2
archimedes' twin circles
archimedes' "salinon"
the flower of life
the seed of life
yin-yang
diagonals of n-gons
Johnson's theorem
Koch snowflake
construction of a triangle (sss)
miquel's triangle theorem
proof of pythagorean-5
Kaleidoscope
the three squares problem
hippias' quadratrix
angle trisection
first brocard point
nagel point
gergonne point
collinear points-2
morley's triangle
rolling circle squares itself
geometric-arithmetic mean inequality
law of cosines (pww)
vivianni's theorem
x+1/x
thm about right triangles
chords and tangents
regular star polygons
squaring a rectangle
pitot theorem
angle between secants
parallel tangents of an ellipse
a property of the hyperbola
tangents to a circle
regular pentagon
a clock
a clock(2)
five squares
golden ratio-3
golden triangle
golden rectangle
the famous "1/7" triangle
the famous "1/5" square
equal chords-1
supplementary angles
aristotle's wheel paradox
parallel chords theorem
from kite to rhombus and square
chord theorem
secant-secant theorem
tangent-secant theorem
fractions in a greek way...
areas-3
area of a triangle (sas)
area of a quadrilateral
area of a triangle-2
Brahmagupta's formula
a square in a square
lemoine point
exeter point
pyth-proof
pyth-proof7
circle and ellipse
bifolium
kappacurve
right strophoid
parallel tangents of an ellipse-1
folium
torpedo curve
constructing a trifolium
trifolium-1
bicorn
trisectrix of maclaurin
deltoid
astroid
versoria
limacon of pascal-1
cardioid-1
cissoid of diokles
lemniscate of bernoulli
eightcurve
conchoid of nicomedes-1
ellipse-1
circle-1
hyperbola-1
parabola-1
quadrilaterals-2
rolling coin paradox
vecten points
feuerbach's point
arc length (verification)
right triangle paradox
square-rectangle paradox
isosceles triangle paradox
sphere in cylinder
cone in cylinder
tangent-chord angle-1
inscribed angles-1
tangent to a circle
pentalpha
star of david
properties of the altitudes
common external tangents
common internal tangents
common external tangents-1
common internal tangents-1
geometric mean theorem
frustum of a right cone
frustum of a regular pyramid
cylinder in cone
convex quadrilaterals
approximating pi-1
a clock-3
find the area-1
triangular numbers-1
pythagorean triples-euclid
pythagorean triples-plato
pythagorean triples-proclus
proof of pythagorean-9
euclid's proof of pythagorean
circles of a regular n-gon
Area of Circles (3)
Solving Similar Triangles (1)
angles between parallels-1
Water Triangle
make an angle
Seven Circles Theorem
circumference of circles-1
cube of a binomial
cylinder in a cone
ferris wheel
the reuleaux triangle-1
points and segments
binomial formula
difference of two squares
conway circle
parallels or not?
lines through a point
regular polygons-3
string art
the height of the pyramid
geometry
Author:
sonom
radical axis-1
the golden ratio (and aphrodite's phi)
rose curves
angles between parallels...
measuring angles...
the lune of Hippocrates
pythagorean theorem (a puzzle)
the lunes of Alhazen
triangle angle-sum theorem
pythagorean spiral
geometric constructions - 13
power of a point
Fibonacci spiral
square vs rhombus
geometric constructions - 12
geometric constructions - 11
geometric constructions - 2
archimedes' arbelos
a prism inside a prism...
reflections...
area of a trapezoid
ptolemy's theorems
pythagorean and galileo's law
area of a triangle
area of a parallelogram
area of a rectangle
approximating pi
constructing a hyperbola...
constructing an ellipse...
constructing a parabola
a pyramid inside a cube...
a math trick-2
angles in a circle...
tux walks up and down...
a triangle
quadrilaterals
square roots in a greek way...
Thales' theorem
regular octagon
angle bisector
inscribed quadrilaterals
tangent at a point
tangent lines to a circle
double reflection
triangles...
a decagon
the intersept (thales) theorem
midpoint parallelogram
classifying triangles...
the reflective property of parabola
the reflective property of ellipse
the reflective property of hyperbola
point symmetry
the angle bisector theorems
the triangle inequality
triangle midpoint theorem
reflections-2
areas inside a parallelogram
areas inside a trapezoid
archimedes' spiral
reflections-3
involute of a circle
cardioid
reflections-4
pythagorean theorem (proof)
tangent-chord angle
area of a kite
median to the hypotenuse
areas of similar triangles
equilateral triangle (SAS)
find the slope
a proof of pythagorean theorem-4
measurements in a circle
the relative position of two circles
a cube...
regular tetrahedron
hexagonal prism
square pyramid
the outer Napoleon triangle
a pyramid inside a cube-1
reflections of a triangle
the golden ratio
central and inscribed angles
sierpinski triangles
find the area
regular polygons
an identity...
an identity-2
triangle-1
area of a rectangle-1
simson line
nine-point circle
angle bisector as locus
incircle and excircles of a triangle
regular polygons-1
an archimedes' formula
area of a circle
area of a circle-1
radians
properties of a rhombus
properties of a rectangle
properties of a trapezoid
properties of a square
axis of symmetry
point of symmetry
equal chords
properties of an isosceles trapezoid
an isosceles triangle...
properties of a kite
cuboid
a tank with a tap
find the angles
find the angle
an equilateral triangle
sum of the interior angles of a n-gon
a Reuleaux triangle
congruent triangles
area of an equilateral triangle
the witch of agnesi
the cissoid of diocles
deltoid
astroid
nephroid
ranunculoid
conchoid of nicomedes
limacon of pascal
cycloids
trammel of archimedes
generalization (pappus) of pythagorean
conchoid of a circle
piriform
ratio of areas-1
ratio of areas-2
division of a segment
an apollonian circle
parabolas
ellipses
hyperbolas
a definition of conics (directrix)
ellipse as a hypotrochoid
ellipses and hyperbolas
eight curve (construction)
radical axis-2
archimedes' twin circles
archimedes' "salinon"
the flower of life
the seed of life
yin-yang
diagonals of n-gons
Johnson's theorem
Koch snowflake
construction of a triangle (sss)
miquel's triangle theorem
proof of pythagorean-5
Kaleidoscope
the three squares problem
hippias' quadratrix
angle trisection
first brocard point
nagel point
gergonne point
collinear points-2
morley's triangle
rolling circle squares itself
geometric-arithmetic mean inequality
law of cosines (pww)
vivianni's theorem
x+1/x
thm about right triangles
chords and tangents
regular star polygons
squaring a rectangle
pitot theorem
angle between secants
parallel tangents of an ellipse
a property of the hyperbola
tangents to a circle
regular pentagon
a clock
a clock(2)
five squares
golden ratio-3
golden triangle
golden rectangle
the famous "1/7" triangle
the famous "1/5" square
equal chords-1
supplementary angles
aristotle's wheel paradox
parallel chords theorem
from kite to rhombus and square
chord theorem
secant-secant theorem
tangent-secant theorem
fractions in a greek way...
areas-3
area of a triangle (sas)
area of a quadrilateral
area of a triangle-2
Brahmagupta's formula
a square in a square
lemoine point
exeter point
pyth-proof
pyth-proof7
circle and ellipse
bifolium
kappacurve
right strophoid
parallel tangents of an ellipse-1
folium
torpedo curve
constructing a trifolium
trifolium-1
bicorn
trisectrix of maclaurin
deltoid
astroid
versoria
limacon of pascal-1
cardioid-1
cissoid of diokles
lemniscate of bernoulli
eightcurve
conchoid of nicomedes-1
ellipse-1
circle-1
hyperbola-1
parabola-1
quadrilaterals-2
rolling coin paradox
vecten points
feuerbach's point
arc length (verification)
right triangle paradox
square-rectangle paradox
isosceles triangle paradox
sphere in cylinder
cone in cylinder
tangent-chord angle-1
inscribed angles-1
tangent to a circle
pentalpha
star of david
properties of the altitudes
common external tangents
common internal tangents
common external tangents-1
common internal tangents-1
geometric mean theorem
frustum of a right cone
frustum of a regular pyramid
cylinder in cone
convex quadrilaterals
approximating pi-1
a clock-3
find the area-1
triangular numbers-1
pythagorean triples-euclid
pythagorean triples-plato
pythagorean triples-proclus
proof of pythagorean-9
euclid's proof of pythagorean
circles of a regular n-gon
Area of Circles (3)
Solving Similar Triangles (1)
angles between parallels-1
Water Triangle
make an angle
Seven Circles Theorem
circumference of circles-1
cube of a binomial
cylinder in a cone
ferris wheel
the reuleaux triangle-1
points and segments
binomial formula
difference of two squares
conway circle
parallels or not?
lines through a point
regular polygons-3
string art
the height of the pyramid
Next
radical axis-1
New Resources
Rolling Triangle
Function Art 3D - Pawn
Floch, fractal, iteration, custom tool.
seo tool
koch tool
Discover Resources
Conjecture about area
The tangent line and derivative of x^n
CCSS High School: Functions (Interpreting Functions)
Pythagore
Congruence through Transformations #2
Discover Topics
Square
LCM and GCD
Symmetry
Correlation
Pie Chart or Circle Chart
