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Shapes
Geometry
| Term | Definition |
|---|---|
| right triangle | a triangle with a 90 degree angle |
| acute triangle | a triangle with three angles less than 90 degrees |
| obtuse triangle | a triangle with one angle greater than 90 degrees |
| isosceles triangle | a triangle with two equal sides |
| scalene triangle | a triangle with no equal sides |
| equilateral triangle | a triangle with all equal sides |
| rhombus | a quadrilateral with four equal sides and two pairs of parallel sides |
| trapezoid | a quadrilateral with one pair of parallel sides |
| rectangle | a quadrilateral with four right angles and two pairs of parallel sides |
| square | a quadrilateral with all equal sides, four right angles and two pairs of parallel sides |
| parallelogram | a quadrilateral with two pairs of parallel sides |