Geometry Terms and shapes

Front

Acute Angle

Back

An angle measuring between 0° and 90°.

Front

Acute Triangle

Back

Triangle with each angle being an acute angle; each angle measuring less than 90⁰.

Front

Alternate exterior angles

Back

If a transversal intersects two parallel lines, then the alternate exterior angles are congruent.

Front

Alternate interior angles

Back

If a transversal intersects two parallel lines, then the alternate interior angles are congruent.

Front

Angle

Back

The figure formed by the intersection of two rays, lines, or line segments, or else by two rays with a common endpoint.

Front

Apothem

Back

A line segment from the center of the polygon to the midpoint of a side.

Front

Arc Length

Back

The measure of a section of the circumference of a circle.

Front

Area

Back

The amount of surface inside of a figure.

Front

Central Angle

Back

Measurement, in degrees or radians, of an angle with its vertex on the center of the circle.

Front

Chord

Back

Combinations of three or more notes played simultaneously.