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Geometry-angles
Definitions of types of angles
Question | Answer |
---|---|
Vertex | The common endpoint of the rays forming an angle. |
Right angle | An angle that measures exactly 90 degrees. |
Acute angle | An angle with a measure of greater than 0 degrees and less than 90 degrees. |
Obtuse angle | An angle that measures greater than 90 degrees, but less than 180 degrees. |
Straight angle | An angle that measures exactly 180 degrees. |
Vertical angle | Opposite angles formed by the intersection of two lines. |
Congruent | Having the same measures. |
Adjacent angles | Angles that have the same vertex, share a common side, and do not overlap. |
∠ | The symbol denoting an angle. |
≅ | The symbol meaning "is congruent to" or equal in shape and size. |
Supplementary angle | Two angles when added together equal 180 degrees |
Complementary angles | Two angles when added together measures 90 degrees. |