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Find counter examples to disprove the fo...

Find counter examples to disprove the following statements:
A quadrilateral with all sides are equal is a square.

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Restate the following statements with appropriate conditioins, so that they become true statements. If a quadrilateral has all its sides equal, then it is a square.

By giving a counter example, show that the following statements are not true. If all the angles of a triangle are equal, then the triangle is an obtuse angled triangle.

Find the truth value of each of the following compound statements : A parallelogram is a quadrilateral and its opposite sides are equal .

Find the truth value of each of the following compound statements : A quadrilateral is a parallelogram if and only if its opposite sides are equal .

Let's give reasons for the following statements: All squares are rectangles.

Let's find if the following statements are true or false. Four sides of a rhombus are equal.