Question

How many angles of a concave quadrilateral can ​

Answer 1

Answer:

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How many angles of a concave quadrilateral can ?

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The sum of interior angle of a quadrilateral must be 360°.

More-

• By dividing of a quadrateral into two triangles of 180° each.
• if any one angle of a triangle are greater than 90° then, the fourth angle must be less than 90°

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