obtuse angle
an angle that is greater than 90 degrees
An obtuse angle is an angle that measures greater than 90 degrees and less than 180 degrees. When we measure an angle, we look at the distance between the two rays that form the angle, and the measure of the angle is determined by the amount of rotation between these rays.
To visually identify an obtuse angle, we look for an angle that appears to be open or wide, with the rays forming a V-shape that is greater than 90 degrees. For example, if the two rays forming an angle measure 100 degrees or 150 degrees, then that angle is an obtuse angle.
It is important to note that an obtuse angle is not a right angle, which measures exactly 90 degrees, nor is it an acute angle, which measures less than 90 degrees. Understanding different types of angles is essential in geometry and trigonometry, as angles play a fundamental role in the measurement and analysis of geometric shapes and figures.
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