Angle Sum

Front

What are corresponding angles?

Back

Corresponding angles are pairs of angles that are in the same position on different parallel lines cut by a transversal. They are equal in measure.

Front

What is the angle sum property of a triangle?

Back

The angle sum property states that the sum of the interior angles of a triangle is always 180 degrees.

Front

If two angles of a triangle are 30° and 70°, what is the measure of the third angle?

Back

80°

Front

What is the measure of each angle in an equilateral triangle?

Back

Each angle in an equilateral triangle measures 60°.

Front

What are alternate exterior angles?

Back

Alternate exterior angles are pairs of angles that lie outside the two parallel lines and on opposite sides of the transversal. They are equal in measure.

Front

If one angle of a triangle is 34° and another is 101°, what is the third angle?

Back

45°

Front

What is the relationship between interior angles and exterior angles of a triangle?

Back

The exterior angle of a triangle is equal to the sum of the two opposite interior angles.

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Front

How do you find the measure of an angle when given the other two angles in a triangle?

Back

Subtract the sum of the two known angles from 180°.

Front

What is the measure of the angles in a right triangle?

Back

In a right triangle, one angle measures 90°, and the sum of the other two angles is 90°.