The two corners of the triangle are each 83 degrees. Determinant of the value of the third angle.
| May 8, 2021 | education
Given: triangle; ∠1 = ∠2 = 83 °.
Find: ∠3 -?
Decision.
By the theorem on the sum of the angles of a triangle: The sum of the angles of a triangle is 180 °, we have:
∠1 + ∠2 + ∠3 = 180 °;
∠3 = 180 ° – (∠1 + ∠2);
∠3 = 180 ° – (83 ° + 83 °) = 180 ° – 166 ° = 14 °.
Answer. The third angle of the triangle is 14 °.
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