Reg. Circles & Angles Test Study Guide

Front

What is a circle?

Back

A circle is a shape consisting of all points in a plane that are at a given distance from a fixed point, called the center.

Front

What is the formula for the area of a circle?

Back

Front

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

What are vertical angles?

Back

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

Front

What are adjacent angles?

Back

Adjacent angles are two angles that share a common side and a common vertex but do not overlap.

Front

How do you find the measure of a missing angle in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees. To find a missing angle, subtract the sum of the known angles from 180.

Front

What is the formula for the area of a polygon?

Back

The area of a polygon can be calculated using various formulas depending on the type of polygon. For a rectangle, A = length × width.

Front

What is the measure of angle 1 if angle 2 is 124 degrees and they are supplementary?

Back

Angle 1 = 180 - 124 = 56 degrees.

Front

What is the measure of a right angle?

Back

A right angle measures 90 degrees.