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4 years ago

Given: Isosceles TriangleDEF. The measure of vertex Angle D is four times the measure of each base angle E and F.

Mathematics

1 answer:

777dan777 [17]4 years ago

4 0

Answer:

D = 120° , E = 30° , F = 30°

Step-by-step explanation:

Let D = 4x

Let E&F = x

4x + x + × = 180°[angles in triangle is 180°]

6x = 180°

x = 180/6

x = 30°

E = 30°

F =30°

D =4(30°)

=120°

(Correct me if i am wrong)

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