Browse the glossary using this index

Special | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL

A

Acute Angle

Angles less than 90 degrees

O

Obtuse Angles

Angles between 90 and 180 degrees

Octagon

a polygon with 8 sides

P

Polygon

a closed figure with straight line segments

R

Rectangle

a four-sided figure with four right angles

Rhombus

a four-sided shape where all sides are equal

Right Angle

90 degrees

S

Square

a polygon with four equal sides and and angles