Answer:
x = 7
Explanation:
since the triangle is isosceles then the 2 legs are congruent, that is
CB = AB
12x + 4 = 88 ( subtract 4 from both sides )
12x = 84 ( divide both sides by 12 )
An isosceles triangle has two sides of equal length.
Given ΔABC is an isosceles triangle, and from inspection of the given diagram:
Therefore:
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