find the value of x if one side of equilateral triangles is x second is 2x and third is x+20•
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Answer:
x = 85
Step-by-step explanation:
equilateral triangle has all angles equal.
x + 2x + x + 20 = 360 (angle sum property)
4x + 20 = 360
4x = 360-20
x = 340/4
x = 85
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