[tex] \colorbox{green}{3:00 PM}[/tex]
[tex] \colorbox{green}{9:00 PM}[/tex]
In 12 hours, they are at right angles 22 times. In 24 hours, they are at right angles 44 times.
At 3:00 and 9:00 the hands of the clock form a right angle, twice a day.
Angles
An angle is a figure formed by two rays with a common endpoint, and which are not on the same line. The two rays are the sides of the angle and the common endpoint is the vertex.
Acute Angle is less than 90°.
Right Angle is exactly 90°.
Obtuse Angle is greater than 90° but less than 180°.
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