Which is the only expression below that DOES NOT represent the measure of R

step-by-step explanation: step 3 should really go to step seven, but anyway never mind.

1 ∠oln ≅ ∠lno

i'm assuming that it's c.)   volcanoes built the mountains and earthquakes tore them down.

d. you cannot tell because there are no values shown.

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.