The Pythagorean theorem, also known as the pythagoras’ theorem, is a fundamental relation in the geometry among the three sides
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Answer:
x = 13.5
Step-by-step explanation:
We know that base angles of an isosceles triangle are equal. The base angles of the triangle are (4x)° each. The vertex angle of the traingle is (6x-9)°. So according to angle sum property of triangle,