Ch.3 Practice Test: Angles, Triangles and Polygons

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

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

What is the formula to find the sum of the interior angles in a polygon?

Back

The sum of the interior angles in a polygon with n sides is given by the formula: (n - 2) × 180°.

Front

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

Back

The sum of the interior angles in a pentagon (5 sides) is 540°.

Front

How do you find a missing angle in a triangle?

Back

To find a missing angle in a triangle, subtract the sum of the known angles from 180°.

Front

What are corresponding angles?

Back

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

Front

What is the measure of angle A if the other two angles in a triangle are 54° and 64°?

Back

Angle A = 180° - (54° + 64°) = 62°.

Front

What are vertical angles?

Back

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

Front

What is the measure of a straight angle?

Back

A straight angle measures 180°.

Front

What is the measure of a right angle?

Back

A right angle measures 90°.