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H Geometry -chapter
introduction to geometry
Question | Answer |
---|---|
Angle.. vertex.. side | an angle is made up of two rays with a common endpoint. This point is called the vertex of the angle. The rays are called sides of the angle |
Acute angle | an angle whose measure is greater than 0 and less than 90 |
right angle | =90 degrees |
obtuse angle | >90 degrees |
straight angle | =180 |