Math - Quadrilateral: Angles,Region,Convex & Concave Quadrilateral - English

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Hello,
BodhaGuru Learning proudly presents an animated video in English which teaches about elements of quadrilateral especially about angle and region. It explains the concept of adjacent angle, opposite angle, opposite vertices etc. It also elaborates the concept of interior, exterior of closed figure like quadrilateral, convex and concave quadrilateral.

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Have fun, while you learn. Thanks for watching
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Team BodhaGuru
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Thank you ma'am... it's very useful and helpful

KNPADMA
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Can you please explain -find the interior and exterior angles of a concave polygon

KNPADMA
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How many maximum angles more than 90° does a concave quadrilateral have ?
I think.... 2
Is it correct?

rupjyotisarma