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The triangle ABC is an isosceles triangle. What are each of the congruent base angles if the vertex angle measures 40 degrees?

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Therefore the solution to the given problem is  the each of the congruent base angles is 70°

What is angle?

In Euclidean geometry, an angle is the figure generated by two rays, called the sides of the angle, sharing a common termination, called the vertex of the angle. Angles created by two rays are in the plane where the rays are located. The intersection of two planes also forms angles. We refer to these as dihedral angles.

Here,

As the triangle is an isosceles triangle therefore it will have 2 same angles

thus,

Sum of the 3 angles of a triangle=180°

Vertex angle =40°

Sum of two congruent angles=180°–40°=140°

Measure of each base angle=70°

Therefore the each of the congruent base angles is 70°

To know  more about angle , visit

https://brainly.com/question/28451077

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