1.

isosceles triangle, the base angle is twice as large as vertex angle. Find theangles of the triangle.

Answer»

In an isosceles triangle , base angles are equal

LET vertex angles be xThen, Base angles will be 2x and 2x

SUM OF ANGLES OF TRIANGLE IS 180°.

Therefore,2x + 2x + x = 180°5x = 180°=> x = 36°

ANSWER = VERTEX ANGLE = 36°BASE ANGLES ARE EQUAL TO = 36° × 2 = 72° & 72°



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