show that opposite angles of a parallogram are equal
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They r equal bcz. Opposite sides r parallel to each other that is why opposite angles r equal.
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Let ABCD be a parallelogram.
Draw it's diagonal AC.
In ∆ABC and ∆ CDA, we have:
Two traiangles both are equal and
Angles A is equal to angle C
Angle B is equal to angle D
Proved.
Draw it's diagonal AC.
In ∆ABC and ∆ CDA, we have:
Two traiangles both are equal and
Angles A is equal to angle C
Angle B is equal to angle D
Proved.
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