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Angles and right angles
A n angle is a figure formed by two rays or line segments that share an
endpoint.
A right angle is a special angle that forms a square corner and it measures 90。.
Example 1 Find all the figures that have angles. ③
① ②
④ ⑤ ⑥
2. Angles 17
A n angle is a figure formed by two rays or line segments that share an
endpoint.
A right angle is a special angle that forms a square corner and it measures 90。.
Example 1 Find all the figures that have angles. ③
① ②
④ ⑤ ⑥
2. Angles 17
