The angle at the base of an isosceles triangle is 63 degrees. Find the angle at the apex of this triangle.
| April 30, 2021 | education
The angles in a triangle add up to 180 degrees.
At the base of an isosceles triangle, the angles are equal.
It is known that one of the angles is 63 degrees, which means that the second angle is also 63 degrees.
Now let’s calculate the angle at the apex of the triangle:
180 – 63 – 63 = 54.
Answer: The angle at the apex of the triangle is 54 degrees.
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