Question

If three angles of a quadrilateral are equal, it must be a rectangle.
If three sides of a quadrilateral are equal, it must be a parallelogram.
Please reply in true or false for both the questions above. ​

Answer 1

Answer:

when the 360 degrees is there than it becomes quadrilateral it is false please follow me

Answer 2

Required Answer:

(1) If three angles of a quadrilateral are equal, it must be a rectangle. False

• This case is not necessarily true because the angles can be anything other than 90° also, condition is that there sum shouldn't exceed 360°.

• Let these angles be 100°, then the fourth angle will be 60°. This is not a rectangle because all angles of the rectangle is equals to 90°.

• It should have been true if all the four angles are equal in the quadrilateral. Or else, any other condition satisfying the property of rectangle is given$.$

(2) If three sides of a quadrilateral are equal, it must be a parallelogram. False

• The opposite sides of the parallelogram is equal and parallel. So, this is not true at all.

• Three sides equal doesn't mean that the fourth side is also equal, hence as no other condition is provided. The above statement is False.