What are the two ways to show that a triangle is a right triangle? A. 1. use slope formula to show all 3 sides have opposite reciprocal slopes
2. use distance formula to show 2 sides are the same length

B 1. use slope formula to show opposite sides have the same slopes
2. use distance formula to show Pythagorean Theorem holds true

C 1. use distance formula to show all 3 sides are equal
2. use slope formula to show two sides are parallel

D 1. use distance formula to show Pythagorean Theorem holds true
2. use slope formula to show that two sides have opposite reciprocal slopes