Unlock your mathematical potential and conquer the College Math CLEP exam with ease! Introducing our powerful College Math CLEP Prep Practice Exam, your ultimate tool for exam readiness.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.


How many degrees are in an isosceles triangle?

  1. 135

  2. 90

  3. 180

  4. 360

The correct answer is: 180

An isosceles triangle has two equal sides and two equal angles. Since the sum of all angles in a triangle is 180 degrees, each angle in an isosceles triangle must be less than 180 degrees. Therefore, none of the other options are correct as they are all angles that are greater than 180 degrees. Option A is outside of the possible range of angles for a triangle, option B is exactly 90 degrees and not less than 180, and option D is more than double the sum of the angles in a triangle. This is why the correct answer is 180 degrees.