Matematika Ria
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Right Angles

A right angle is an internal angle which is equal to 90°

This is a right angle

Note the special symbol like a box in the angle. If you see this, it is a right angle. The 90° is rarely written in. If you see the box in the corner, you are being told it is a right angle.


All the angles below are right angles:

A right angle can be in any orientation or rotation as long as the internal angle is 90°