Angles in Circles

Front

What is an angle?

Back

An angle is formed by two rays (sides) that share a common endpoint (vertex).

Front

What is a circle?

Back

A circle is a round shape where all points are the same distance from the center.

Front

What is the center of a circle?

Back

The center of a circle is the point that is equidistant from all points on the circle.

Front

What is a fraction of a circle?

Back

A fraction of a circle represents a part of the whole circle, often expressed in degrees or radians.

Front

What does 1/4 of a circle represent in degrees?

Back

1/4 of a circle represents 90 degrees.

Front

What does 1/2 of a circle represent in degrees?

Back

1/2 of a circle represents 180 degrees.

Front

What is a clockwise direction?

Back

Clockwise is the direction that the hands of a clock move.

Front

What is a counterclockwise direction?

Back

Counterclockwise is the direction opposite to the movement of the hands of a clock.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.