Question

How can you use the protractor measurements in the diagram to conclude that line m is not parallel to line n?

Answer 1

If m and n are parallel then the corresponding angles are equal.

Here, the angles made by the line m and transversal is 113 and 67 degree.

Also, the angles made by the line n and transversal is 110 and 70 degree.

Here, corresponding angles are not equal,

That is, 113 is not equal to 110 and 67 is not equal to 70.

Therefore, lines m and n are not parallel.