If you are given three lengths, how do you determine if the lengths form a right triangle, an obtuse triangle, or an acute triangle.
For example, what type of triangle is created from the lengths of 13,31, and 17?
Video Guide
0:17 Determine whether or not the following sets of numbers could represent a right triangle. If not, classify the triangle is acute or obtuse.
Use the Pythagorean Theorem to test.
If a2 + b2 = c2, then it is a right triangle.
If a2 + b2 less than c2, then it is an obtuse triangle
If a2 + b2 greater than c2, then it is an acute triangle
1:24 Works practice problems 12,13, and 14
4:47 Solves a trigonometry word problem
I
