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PA Geometry Terms
| Term | Definition |
|---|---|
| Trapezoid | A quadrilateral with one pair of parallel sides |
| Parallelogram | A quadrilateral with two pairs of parallel sides |
| Rhombus | A quadrilateral with two pairs of parallel sides and four sides of equal length |
| Rectangle | A quadrilateral with two pairs of parallel sides and four right angles |
| Square | A quadrilateral with two pairs of parallel sides, four right angles, and four sides of equal length |
| Right Triangle | A triangle with one right angle and two acute angles |
| Acute Triangle | A triangle with three acute angles |
| Obtuse Triangle | A triangle with one obtuse angle and two acute angles |
| Scalene Triangle | A triangle with three side of different lengths |
| Isosceles Triangle | A triangle with at least two sides of equal length |
| Equilateral Triangle | A triangle with three sides of equal length |
| Parallel Lines | Two lines that never meet |
| Perpendicular Lines | Two lines that intersect at 90 degrees |
| Complementary Angles | Two angles whose measures have a sum of 90 degrees |
| Supplementary Angles | Two angles whose measures have a sum of 180 degrees |
| Vertical Angles | Two pairs of angles that do not share a side and have the same measure--formed by intersecting lines |