Glossary
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circle
- A plane figure in which all the points are the same distance from a point called the center.
hexagon
- A polygon with 6 sides and 6 angles.
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octagon
- A polygon with 8 sides and 8 angles.
- parallelogram
- A quadrilateral with 2 pairs of parallel sides, 2 pairs of equal angles, and 2 pairs of equal sides.
pentagon
- A polygon with 5 sides and 5 angles.
- plane figure
- A figure in a plane that is formed by lines.
- polygon
- A closed plane figure with straight sides.
- quadrilateral
- A polygon with 4 angles and 4 sides
that are curved, straight, or both.
rectangle
- A plane figure with 4 sides and 4 right angles.
square
- A plane figure with 4 equal sides and 4 right angles.
triangle
- A plane figure with 3 sides and 3 angles.
- A plane figure with 4 sides and 4 right angles.