A 45-degree angle is called an acute angle. In geometry, an acute angle is an angle that measures between 0 and 90 degrees. It is less than a right angle (90 degrees) and is commonly found in various geometric shapes and calculations.
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45 degree angle
An acute angle
First of all, the 90 degree angle is called a right angle.Now, the angles with lower than 90 degrees is called an acute angle.Last, the angles with higher than 90 degrees is called an obtuse angle.
Answer = A 180 degree angle is called a Straight Angle!!
what is a 90 degree angle called