<PRE><B>Question 1068296</B>
angles a + b + c = 180 degrees (sum of the angles of any triangle)
:
x+20 + 2x-20 + 3x/2 = 180
:
3x + 3x/2 = 180
:
6x/2 + 3x/2 = 180
:
9x/2 = 180
:
9x = 360
:
x = 40
:
a = 40+20 = 60
b = 2 * 40 - 20 = 60
c = 3 * 40 / 2 = 60
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a = b = c = 60
:
triangle abc is equalateral since all three angles are equal
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:
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