different angles based on their properties or characteristics.
An angle that measures 90 degrees is called a right angle. Right angles don’t have to face the right—any angle that measures 90 degrees is a right angle. A right angle is marked with a square at the vertex. Right angles are very common—they form the corners of squares and rectangles, doors and windows, and much, much more!
Which of these angles is a right angle?
ABCD
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Without any additional information or description of the angles, it is not possible to determine if any of them are right angles.
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