Question

In an isosceles triangle,the base angles are equal. The vertex angle is 40°. What are the base angles of the triangle?​

Answer 1

Answer:

Each base angle measures 70°

Step-by-step explanation:

Let the measure of the equal base angles be x°.

40°+x°+x°=180°(angle sum property)

40°+2x°=180°

2x°=180°-40°

2x°=140°

x=140/20

x=70°

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