The angle at the base of an isosceles triangle is 40 degrees, find the angle adjacent to the angle at the apex.
| January 2, 2021 | education
An isosceles triangle is a triangle in which two sides are equal and opposite these sides are at the base equal angles. in any triangle, the sum of all three angles is one hundred and eighty degrees.
1. Find what is the angle of the triangle at the vertex.
180-40-40 = 100 degrees.
The sum of adjacent angles is one hundred and eighty degrees.
2. Find what is the angle adjacent to the angle at the vertex.
180-100 = 80 degrees.
Answer: The angle adjacent to the apex angle is eighty degrees.
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