The triangle has an obtuse angle. Is it true that there is no right angle in it?
| June 1, 2021 | education
Yes, since the sum of the angles of a triangle is always 180 degrees, a right angle is 90 degrees, and an obtuse angle is greater than 90 degrees and less than 180 degrees. If we add up the degree values of an obtuse and right angle, then we get a number that is greater than 180 degrees, and since the sum of the angles of a triangle is always 180 degrees, it turns out that there is no triangle in which one angle is obtuse and the other straight.
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