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Outline
Elementary Geometry
Cavalieri's Principle
Not Vertical Angles
Vertical Angles
Definition of a Circle
The sum of the acute angles in a right triangle
The Sum of the Interior Angles of Any Triangle
The sum of the angles in Any Triangle
The Sum of the Exterior Angles of Any Triangle
Area of Triangles
Congruent Triangles
Parallelograms
Properties of Parallelograms
Line Symmetries and the Quadrilaterals
Perimeter of a Rectangle
Exterior Angles of Polygons
Regular Pentagon and the Golden Ratio
Angles in a Regular Polygon
Art with Regular Polygons. Coloring.
Errors in Measurement
The midsegments divide any triangle in congruent triangles
Triangles with Equal Area
Pythagorean Theorem
Circumference of a Circle and Pi
Circumference of a Circle
Explore the Area of a Circle
Intersection of Circles and Spheres
Copy of Volume of the Cuboid
The Volume of the Sphere
Prism
Intersection of secants in a circle
Maximum Area of a Rectangle if Fixed Perimeter
Glide Reflection - Walking
Rotational Symmetry
Shearing Problem 6
Shearing 7
Cylinder
Sections of Cylinders
Net of a Cylinder
Net of a Cone
Conic Sections
Exploring Sections of Cubes
Elementary Geometry
Author:
Irina Boyadzhiev
Topic:
Geometry
This book contains applet used for teaching geometry topics in classes for Elementary Teachers.
Cavalieri's Principle
Not Vertical Angles
Vertical Angles
Definition of a Circle
The sum of the acute angles in a right triangle
The Sum of the Interior Angles of Any Triangle
The sum of the angles in Any Triangle
The Sum of the Exterior Angles of Any Triangle
Area of Triangles
Congruent Triangles
Parallelograms
Properties of Parallelograms
Line Symmetries and the Quadrilaterals
Perimeter of a Rectangle
Exterior Angles of Polygons
Regular Pentagon and the Golden Ratio
Angles in a Regular Polygon
Art with Regular Polygons. Coloring.
Errors in Measurement
The midsegments divide any triangle in congruent triangles
Triangles with Equal Area
Pythagorean Theorem
Circumference of a Circle and Pi
Circumference of a Circle
Explore the Area of a Circle
Intersection of Circles and Spheres
Copy of Volume of the Cuboid
The Volume of the Sphere
Prism
Intersection of secants in a circle
Maximum Area of a Rectangle if Fixed Perimeter
Glide Reflection - Walking
Rotational Symmetry
Shearing Problem 6
Shearing 7
Cylinder
Sections of Cylinders
Net of a Cylinder
Net of a Cone
Conic Sections
Exploring Sections of Cubes
Next
Cavalieri's Principle
New Resources
Spherical dodecahedron/icosahedron
Multiplying 4-Digit by 4-Digit Numbers Using an Area Model
Taylor Series for 1/(1 - x)
Here comes the sun!
Noisy loop
Discover Resources
sss task
Phasor Diagram and Sinusoid
Magic
Trig
Isosceles Triangle
Discover Topics
Algebra
Vectors 2D (Two-Dimensional)
Vectors 3D (Three-Dimensional)
Expected Value
Planes
