7. In an isosceles triangle, the base angles are equal. If the vertex arigle is twice each of the base angle and the sum of three angles of a triangle is 180°, what are the angles of the triangle?
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Answer:
45 degree,45 degree,90 degree
Step-by-step explanation:
Let the two base angles be x
The vertex angle be 2x
x+x+2x=180
4x=180
x=180/4=45 degree
Base angles=45 degree
Vertex Angle=90 degree
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