Geometry
For this unit you will need a complete geometry set (ruler, compass, protractor).
geometryunit.pdf | |
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How to Copy an Angle using a Compass and a Ruler:
How to Bisect an Angle using a Compass and a Ruler:
How to Create a 60 degree Angle using a Compass and a Ruler:
How to Create a 90 degree Angle (Right Bisector) using a Compass and a Ruler:
Starts at 2:37
Starts at 2:37
Translation using a Compass and Ruler
Vertical Angles:
Vertical Angles are created by intersecting lines. Vertical angles are congruent. They are located on opposite sides of a vertex (point).
In the diagram below:
angle 1 and angle 3 are vertical angles.
angle 2 and angle 4 are vertical angles.
Alternate Interior and Exterior Angles:
Alternate Interior Angles are angles that sit inside the parallel lines and on alternate sides of the transversal. In geometry, a transversal is a line that passes through two lines in the same plane at two distinct points.
In the diagram below:
Angle 2 and angle 6 are alternate interior angles.
Angle 4 and angle 5 are alternate interior angles.
Alternate Exterior Angles are angles that sit outside the parallel lines and on alternate sides of the transversal.
In the diagram above:
Angle 1 and angle 7 are alternate exterior angles.
Angle 2 and angle 8 are alternate exterior angles.
Alternate Interior Angles are angles that sit inside the parallel lines and on alternate sides of the transversal. In geometry, a transversal is a line that passes through two lines in the same plane at two distinct points.
In the diagram below:
Angle 2 and angle 6 are alternate interior angles.
Angle 4 and angle 5 are alternate interior angles.
Alternate Exterior Angles are angles that sit outside the parallel lines and on alternate sides of the transversal.
In the diagram above:
Angle 1 and angle 7 are alternate exterior angles.
Angle 2 and angle 8 are alternate exterior angles.
Complementary Angles:
Complementary Angles are two angles that equal 90 degrees.
Supplementary Angles:
Supplementary Angles are two angles that equal 180 degrees.