Question

Julie’s math teacher asked her to draw an example of each of these shapes.
A quadrilateral with no right angles
A quadrilateral with exactly 1 right angle
A quadrilateral with exactly 2 right angles
A quadrilateral with exactly 3 right angles
A quadrilateral with exactly 4 right angles
Which shape is impossible to draw? Justify your answer.

Answer 1

A quadrilateral with 3 right angle is impossible to draw as the 4 angles must add up to 360 degrees. If you had 3 right angles, they would add up to 270, meaning the final angle would have to be another right angle (90 degrees) and then the shape would have 4 right angles, not 3.