In the diagram above, WXYZ is a rhombus and ∠WYX = 20°. What is the value of ∠XZY

  • A 20o
  • B 30o
  • C 45o
  • D 60o
  • E 70o
waec 1990mathematics

The correct answer is E. 70o

Diagonals bisect at 90°;  < YXZ = 90° - 20° = 70°

But ZY = XY (sides of a rhombus)

\(\therefore\) < XYZ = 70° (base angle of an isos. triangle)

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