The figure formed by two rays sharing a common endpoint.
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A right angle is an angle that is equal to 90 degrees. It looks more like an L-shaped angle.
Anticlockwise.
No. A right angle has exactly 90 degrees; an acute angle has less than 90 degrees.
An isosceles triangle
Contains one right angle, and the sum of the remaining angles is 90 degrees. Has 2 legs and 1 hypotenuse.