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PA Geometry Terms

TermDefinition
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
Created by: jlparker