A triangle ABC A = 100 B = 20 C = 60 what kind of triangle?
| May 20, 2021 | education
It is known that the sum of the angles of a triangle is 180 °, and if one of the angles is 90 °, then the triangle is straight, if each of the angles is less than 90 °, then the triangle is acute, and if one of the angles is more than 90 °, then the triangle is obtuse. First, we check if the triangle presented to us is real?
100 ° + 60 ° + 20 ° = 180 °
The triangle is real, and since one of the angles is 100 °, which is more than 90 °, then the triangle is obtuse.
Answer: the triangle is dull.
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