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x" = 3p"
x" + p" = 3p" + p" = 4p" = 90" -------=>(siku2)
p" = 90 : 4
p = 22,5"
maka sudut tersebut = 3 x 22,5" = 67,5"
4x = 90
x = 90/4
x = 22,5
3x = 3 × 22,5 = 67,5