Mammoth Memory

Right angle

Right angle – Standing directly upright the internal angle is 90° (a right angle is an angle that measures exactly 90°).

A right angle is exactly 90 degrees

They stood at an upright angle (right angle).


Example 1

Automotive engineers use right angles all the time

These gears are at a right angle to one another.


Example 2

3 and 9 o clock draw out right angles

At precisely 3 o’clock the two hands of a clock are at a right angle.

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