obtuse angle
An angle greater than 90 degrees
An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees. In other words, an obtuse angle is an angle that is greater than a right angle but less than a straight angle.
The term obtuse comes from the Latin word obtusus, which means blunt or dull. This is because an obtuse angle appears to be less pointed than a right angle or an acute angle.
To measure an obtuse angle, you can use a protractor. Simply place the center of the protractor at the vertex of the angle and align one side of the angle with the zero-degree line. Then, read the degree measurement on the protractor where the other side of the angle intersects the protractor.
Examples of common objects or situations that involve obtuse angles include a door opening that is wider than 90 degrees, the angle between the hands of a clock at 3:15, or the angle between the roof and the wall of a house.
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