Geometry Foundation

A part of a line and has two endpoints.

• Line

• Ray

• Line Segment

• Parallel Lines

A part of a line that has a fixed starting point and extends infinitely in one direction.

• ray

• Line

• Line Segment

• Perpendicular Lines

A flat two-dimensional surface. It extends infinitely

• Line

• Plane

• Parallel Lines

• Perpendicular Lines

Formed when two straight lines or rays meet at a common endpoint (the vertex)

• Point of Intersection

• Perpendicular Lines

• Right Angle

• Angle

An angle that measures 90 degrees at the vertex

• Line

• Point of Interection

• Right Angle

• Perpendicular Lines

a point lies on a line segment if and only if the sum of the distances from the point to each endpoint of the line segment is equal to the length of the line segment itself

• Angle

• Segment Addition Postulate

• Angle Addition Postulate

• Line

The Sum of two angle measures that are joined by a common ray will be equal to the measure of the angle they form.

• Angle

• Right Angle

• Point of Intersection

• Angle Addition Postulate

What do you call two angles whose sum is 90 degrees? 

• Straight Angles

• Vertical Angles

• Complementary Angles

• Adjacent Angles

Find the length of TU

• 10

• 52

• 12

• 22

This is what kind of angle?

• acute

• obtuse

• right

• straight