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2015-11-22T19:05:41+08:00

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Property no. 3 of the parallelogram :) (Consecutive angles of a parallelogram are supplementary)
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2015-11-22T19:22:12+08:00

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If you happen to read the Properties of a Parallegram. There you'll find that;

In a parallelogram, any two consecutive angles are ALWAYS supplementary.

Remember:
That the 'Properties of a Parallelogram' is NOT A THEOREM, but has been PROOVED by mathematicians.

Hope it Helps =)
----Domini----
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