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math chapter12 vocab
Term | Definition |
---|---|
Regular Polygon | A polygon with all sides and angles congruent |
Irregular polygon | A polygon where not all sides and angles are congruent |
Triangle | A polygon with 3 sides |
quadrilateral | A polygon with 4 sides |
pentagon | A polygon with 5 sides |
hexagon | A polygon with 6 sides |
octagon | A polygon with 8 sides |
acute triangle | A triangle with all acute angles |
obtuse triangle | A triangle with 1 obtuse angle |
right triangle | A triangle with 1 right angle |
scalene triangle | A triangle with no congruent sides |
isosceles triangle | A triangle with 2 congruent sides |
equilateral triangle | A triangle with all congruent sides |
Trapezoid | Quadrilateral with 1 pair of parallel sides |
Parallelogram | Quadrilateral with opposite sides that are congruent and parallel |
Rectangle | Parallelogram with 4 right angles |
Square | Parallelogram with 4 right angles and 4 congruent sides |
Rhombus | Parallelogram with 4 congruent sides |
circumference | Distance around the outside of a circle |
chord | A line segment with its endpoints on the circle but doesn’t go through the center |
radius | A line segment from the center to the outside of the circle |
diameter | A chord that passes through the center of a circle |