Question

squares, rectangle and parallograms are all quadrilateral. why?​

Answer 1

Answer:

A quadrilateral can be defined as a closed, two-dimensional shape which has four straight sides. The polygon has four vertices or corners.

So,a square is a regular quadrilateral, which means that it has four equal sides and four equal angles (90-degree angles, or 100-gradian angles or right angles). It can also be defined as a rectangle in which two adjacent sides have equal length.

While, A rectangle is a quadrilateral with four right angles. It can also be defined as an equiangular quadrilateral, since equiangular means that all of its angles are equal.

And, A parallelogram is a quadrilateral with opposite sides parallel (and therefore opposite angles equal). A quadrilateral with equal sides is called a rhombus, and a parallelogram whose angles are all right angles is called a rectangle.

Step-by-step explanation:

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Answer 2

Answer:

Because a quadrilateral has four sides so that squares, rectangle and parallograms are all quadrilateral.