Obtuse Angles: Definition, Properties, And Examples

obtuse angle

a triangle with one angle that is > 90 degrees

An obtuse angle is an angle that measures greater than 90 degrees (but less than 180 degrees). It is an angle that is blunter or less sharp than a right angle (which measures exactly 90 degrees).

In geometric terms, an obtuse angle can be formed when two line segments or two rays meet each other at a point, and the angle between them is greater than 90 degrees.

A practical way to identify an obtuse angle is to use a protractor to measure the angle, and if the angle measures between 90 and 180 degrees, it is considered to be obtuse.

Examples of obtuse angles include the angle formed by the hands of a clock when it is after 3:00 or before 9:00, as well as the angle formed by the roofline of a typical house. It is important to note that obtuse angles cannot be acute (measuring less than 90 degrees) or right (measuring exactly 90 degrees).

More Answers:
Learn About Obtuse Triangles: Definition And Formula
Exploring Acute Triangles: Characteristics And Properties | Math Guide
Right Triangles: The Pythagorean Theorem Explained

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