Cracking the GRE Premium Edition with 6 Practice Tests, 2016 by Princeton Review

Cracking the GRE Premium Edition with 6 Practice Tests, 2016 by Princeton Review

Author:Princeton Review [Review, The Princeton]
Language: eng
Format: epub
ISBN: 978-1-101-88184-2
Publisher: Random House Children's Books
Published: 2015-07-13T16:00:00+00:00


The Rule of 180°

Every triangle contains three angles that add up to 180 degrees. You must know this fact cold for the exam. This rule applies to every triangle, no matter what it looks like. Here are some examples:

Equilateral Triangles

An equilateral triangle is a triangle in which all three sides are equal in length. Because all of the sides are equal in these triangles, all of the angles are equal. Each angle is 60 degrees because 180 divided by 3 is 60.

Isosceles Triangles

An isosceles triangle is a triangle in which two of the three sides are equal in length. This means that two of the angles are also equal.



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