An isosceles triangle is a triangle with 2 congruent sides. The congruent sides are called legs and the third side is called the base. So if 2 sides of a triangle have the same length, then we say that the triangle is isosceles.
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D- It would quadruple
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3
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the answer is x=3 because 4x3 = 12 + 1 = 13. there's your answer. please mark me brainliest!!!
Step-by-step explanation:
a variable is a quantity that may change within the context of a mathematical problem or experiment
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