Question

it is not possible that each angle of a quadrilateral be 90º​

Answer 1

Answer:

total sum ÷ number of all sides

Step-by-step explanation:

hope it's helpful

Answer 2

Hey Buddy !

Answer:

Yes

Step-by-step explanation:

Yes it is possible.

As the sum of all the angles in a quadrilateral must be 360°, [(n - 2) × 180°]

As a Quadrilateral has 4 sides,

90° + 90° + 90° + 90° = 360°.

Hence it is possible that each angle of a quadrilateral be 90°.

Example : Square, Rectangle.

Hope this helps you !

Thanks !