Question

Use the SAS Postulate to prove triangle W X Y approximately equal to triangle W Z Y space i f space stack W Z with bar on top approximately equal to stack W X with bar on top space a n d space angle Z W Y approximately equal to angle X W Y.

Answer 1

• In ∆WXY and ∆WZY,

1. WX = WZ (given)
2. Angle XWY = Angle ZWY (given)
3. WY = WY (common)

• Therefore, by SAS congruency, ∆WXY is congruent to ∆WZY.

Hope you could get an idea from here.

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