Question

You are asked to draw a triangle using three of the following angles: 0°, 30°, 45°, 55°, 60°, 80°, 90°, 105°. Which triangle cannot exist? A) 30°, 60°, 90° B) 45°, 55°, 80° C) 30°, 45°, 105° D) 30°, 45°, 55°

Answer 1

The answer is D. All you have to do is add all of the angles for each choice you're given. It has to add up to exactly 180, because every triangle is 180 degrees.