obtuse angle
an angle that measures more than 90 degrees – it is more open than a right angle
An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees. In other words, it is an angle that is greater than a right angle (90 degrees) but less than a straight angle (180 degrees).
In geometry, angles are classified based on their measures. There are three main types of angles: acute angles, right angles, and obtuse angles.
To identify an obtuse angle, you can use a protractor to measure the angle’s degree. Suppose you measure an angle to be 120 degrees. This angle is greater than a right angle, which measures 90 degrees, and therefore it is an obtuse angle.
Some examples of objects or shapes that contain obtuse angles are the corners of a rectangle, triangles, or irregular polygons. It is important to understand different types of angles and their properties in geometry, as they are used to solve various problems in the field.
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