Mathematics

Question

PLS HALP on formulas involving polygons
PLS HALP on formulas involving polygons

1 Answer

  • The sum of all five angles is 540 degrees.
    A) 4*congruent angles + 5th angle = 540
    B) (5th angle) -30 = 2*cong angle

    A) 5th angle = 540 -4*cong angle
    B) 5th angle  = 2*(cong angle)   -30
    Multiplying B) by -1
    B) -5th angle  = -2*(cong angle)   +30  then adding to A)
    A) 5th angle = 540 -4*cong angle

    -2*(cong angle)   +30  = 540 -4*cong angle
    2*(cong angle) = 510
    *****************************************
    By trial and error I determined
    each congruent angle = 95
    5th angle = 160
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