obtuse angle
An obtuse angle is an angle that measures between 90 degrees and 180 degrees
An obtuse angle is an angle that measures between 90 degrees and 180 degrees. It is larger than a right angle, which is exactly 90 degrees, but smaller than a straight angle, which is exactly 180 degrees.
To understand the concept of an obtuse angle, imagine a line segment with two rays extending from one endpoint. The point where the rays meet is called the vertex of the angle. If the rays are spread apart, forming an angle that opens wider than a right angle but less than a straight angle, then it is an obtuse angle.
Here is an example of an obtuse angle:
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| \
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|______\
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In this example, the rays extend from the endpoint to form an angle that is greater than 90 degrees but less than 180 degrees.
It’s worth mentioning that the sum of all angles in a triangle is always 180 degrees. Since a right angle is exactly 90 degrees, and an obtuse angle is greater than 90 degrees, an obtuse angle cannot exist within a triangle, as it would violate this rule. However, an obtuse angle can exist as a standalone angle or as one of the angles in a polygon with more than three sides.
To measure an angle, you can use a protractor. Place the center of the protractor at the vertex, align one edge with one of the rays, and read the measurement where the other ray intersects the scale on the protractor.
I hope this explanation helps you understand what an obtuse angle is. Let me know if you have any further questions!
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