If two points are noncollinear, then a right triangle contains one obtuse angle

Question

Determine if each conditional is true or false, give a counterexample

Answer 1

Two points are always colinear. One and only one line can be drawn through two points.

A right triangle cannot contain an obtuse angle because the non-right angles are complementary (sum is 90 degrees) and an obtuse angle by definition is greater than 90 degrees.

A right triangle has nothing to do with  colinearity.

There is no cause and effect relationship.