| Term | Definition |
|
angle |
figure formed by two rays with the same endpoint |
|
protractor |
a tool used to measure angles |
|
polygons |
plane figures with three or more sides; examples are triangles, quadrilaterals, pentagons, hexagons, and octagons |
|
perimeter |
the distance around a figure |
|
area |
the amount of space inside a figure |
|
parallelogram |
a quadrilateral whose opposite sides are parallel; examples are rectangles and squares |
|
circumference |
the distance around a circle |
|
radius |
the distance from the center of a circle to its edge |
|
space figure |
a three-dimensional figure that has length, width, and height |
|
volume |
the amount of space inside a three-dimensional figure |