Geometry Flashcard

Front

What is an angle?

Back

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

Front

What is the measure of a right angle?

Back

A right angle measures 90 degrees.

Front

What is a rectangle?

Back

A rectangle is a four-sided shape (quadrilateral) with opposite sides that are equal in length and four right angles.

Front

What is the formula for the area of a rectangle?

Back

Area = length × width.

Front

If a rectangle has a width of 12 feet and a length of 9 feet, what is its area?

Back

Area = 12 feet × 9 feet = 108 square feet.

Front

What is the relationship between the length and width of a rectangle?

Back

The length is often longer than the width, but they can be equal in the case of a square.

Front

What is the measure of a straight angle?

Back

A straight angle measures 180 degrees.

Front

What is a circle?

Back

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

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2 × π × radius.

Front

What is the measure of a full rotation?

Back

A full rotation measures 360 degrees.