Unit 1 & 2 Geometry IM, Review/ Part 2

Front

What is the sum of the interior angles in a triangle?

Back

The sum of the interior angles in a triangle is always 180°.

Front

If two angles are complementary, what is the relationship between them?

Back

Two angles are complementary if the sum of their measures is 90°.

Front

Define an exterior angle of a triangle.

Back

An exterior angle of a triangle is formed by one side of the triangle and the extension of an adjacent side. The measure of an exterior angle is equal to the sum of the measures of the two opposite interior angles.

Front

What is the relationship between alternate interior angles when two parallel lines are cut by a transversal?

Back

Alternate interior angles are equal when two parallel lines are cut by a transversal.

Front

Back

Front

What is a linear pair of angles?

Back

A linear pair of angles consists of two adjacent angles that form a straight line, and their measures add up to 180°.

Front

In a triangle, if one angle measures 40° and the exterior angle at that vertex measures 120°, what is the measure of the other angle?

Back

The measure of the other angle is 80°, since the exterior angle is equal to the sum of the two opposite interior angles.

Front

Back

Front

Back

Front

What is the measure of an alternate exterior angle if one of the angles is 50°?

Back

The measure of the alternate exterior angle is also 50° when two parallel lines are cut by a transversal.