McGraw-Hill's New GRE, 2011-2012 Edition (Mcgraw-Hill's Gre (Book Only)) by Dulan Steven

Author:Dulan, Steven [Dulan, Steven]
Language: eng
Format: mobi
Publisher: McGraw-Hill
Published: 2011-02-07T16:00:00+00:00

Therefore, the midpoint of the line between the points (2,3) and (4,5) is (3,4).

Triangles

The following are properties of triangles that are commonly tested on the GRE:

• In an equilateral triangle, all three sides have the same length, and each interior angle measures 60 degrees.

• In an isosceles triangle, two sides have the same length, and the angles opposite those sides are congruent.

• In a right triangle, one of the angles measures 90 degrees. The side opposite the right angle is the hypotenuse, and it is always the longest side.

• The sum of the interior angles in any triangle is always 180 degrees.

• The perimeter (P) of a triangle is the sum of the lengths of the sides.

• The area (A) of a triangle is equivalent to (base)(height). The height is equal to the perpendicular distance from an angle to a side. Following are examples of the height of a given triangle:

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