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GeoGebra
GeoGebra Classroom
Outline
Lines and Angles
Basic Geometric Objects and definitions
Types of angles
Animated acute angles
Animated view of right angles.
Animated view of obtuse angles.
Animated view of straight angles.
Animated view of reflex angles.
Protractor Practice (Not Random)
Protractor Practice (Random)
Sum of angles in polygons
Angles in a 5-pointed star
Sum of interior angles in a triangle
Sum of the angles in a triangle
Missing angle in a triangle
Definition of complementary angles
Missing complementary angle
Supplementary angles
Missing supplementary angle
Vertical angles
Triangle on a line with missing angles
Angles on a line
Broken Protractor
Lines and Angles
Author:
Ronan Downes
,
Duane Habecker
A series of applets about lines and angles for 10 to 12 year old students.
Basic Geometric Objects and definitions
Types of angles
Animated acute angles
Animated view of right angles.
Animated view of obtuse angles.
Animated view of straight angles.
Animated view of reflex angles.
Protractor Practice (Not Random)
Protractor Practice (Random)
Sum of angles in polygons
Angles in a 5-pointed star
Sum of interior angles in a triangle
Sum of the angles in a triangle
Missing angle in a triangle
Definition of complementary angles
Missing complementary angle
Supplementary angles
Missing supplementary angle
Vertical angles
Triangle on a line with missing angles
Angles on a line
Broken Protractor
Next
Basic Geometric Objects and definitions
New Resources
Proving Triangles Congruent (2): Multi-Step Transformations
Constructing the Perpendicular Line Through a Point on the Line
Equations of Tangents to Circles
以百分數比較兩個數值
Simple 2D Vector Field
Discover Resources
sinus_parameter
KOSINUS
Graph of a Circular Relation
Plumazos_1
Combining rates - Joe & Sam paint a wall - revisited
TR (SAMSUN) - Εξισώσεις
garis lurus pd bidkord
Discover Topics
Linear Functions
Planes
Bar Chart or Bar Graph
Integers
Tangent Function
