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Shapes & Designs
Term | Definition |
---|---|
Triangle | a polygon with 3 sides and 3 angles |
Right triangle | a three sided polygon with one angle that equals 90 degrees |
Isosceles Triangle | a three sided polygon with 2 sides that are the same length |
Equilateral Triangle | a three sided polygon where are sides are the same length |
Quadrilateral | a four sided polygon |
Parallelogram | a quadrilateral where opposite sides are parallel and the same length |
Polygon | any enclosed shape made of only straight sides that do not intersect |
Degree | a measure of rotation of an angle |
Right Angle | where 2 lines intersect to form 90 degrees |
Initial Side | the beginning line when measuring an angle |
Terminal Side | the ending line when measuring an angle |
Straight Angle | an angle that measures 180 degrees |
Acute Angle | an angle that measures between 0 and 90 degrees |
Obtuse Angle | an angle that measures between 90 and 180 degrees |
Quadrant | one of the 4 sections on a coordinate grid |
Complementary Angles | when 2 angles combine to equal exactly 90 degrees |
Supplementary Angles | when 2 angle combine to equal exactly 180 degrees |