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Straight Angle
A straight angle is
an angle
that measures 180°
Angle Mania
Acute Angle
An acute angle
measures less than 90°.
Obtuse Angle
An obtuse angle is an
angle that is
greater than 90 degrees,
but less than 180 degrees.
Right Angle
A right angle measures
exactly 90°.
A right angle forms a
square corner.
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