Prove by contradition that two lines in a plane cannot intersect in more than one point.

Two intersecting lines can intersect each other at more than one point.

Prove that a st. line cannot cut a circle in more than two points.

Two distinct lines in a plane can have two points in common.

Two distinct .......... in a plane cannot have more than one point in common.

Take a sheet of paper. Make two folds (and crease them).to represent intersecting lines and discuss. Can two lines intersect in more than one point?

5.20, AC and BE intersect at P. AC and BC intersect at C. AC and EC intersect at C. Try to find another ten pairs of intersecting line segments. Should any two lines or line segments necessarily intersect? Can you find two pairs of non-intersecting line segments in the figure? Can two lines intersect in more than one point? Think about it.

A polynomial cannot have more than one zero.

State whether the following statements are true or false Two lines in a plane always intersect at point.