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In ΔXYZ, P is a point on side YZ and XY = XZ. If ∠XPY = 90 degree and YP = 9 cm, then what is the length of YZ ? |
17 cm 18 cm 12 cm 15 cm |
18 cm |
We have, XY = XZ ∠XPY = 90° YP = 9 cm In ΔXPY and ΔXPZ XY = XZ , XP = XP ∠ XYZ = ∠ XZY ΔXPY ~ ΔXPZ YP = PZ = 9 cm YZ = YP + PZ = 9 + 9 YZ = 18 cm |
