# >> Standardized Tests >> SAT

How to solve Geometry Problems: Lines and Angles

Geometry is an essential part of standardize tests such as GRE, SAT, GMAT and others. The geometry part includes topics like: angles, lines, figures, areas and more. This article will teach you the basic about angles and lines. If you would like to see this article as a video format please visit WWW.I-HATE-MATH.COM

Pen
Paper
Ruler

Instructions

- 1
  Let's remember that on a straight line, the sum of the angles equal to 180. Therefore, if we have "X" and "Y", we know that "X + Y= 180"
- 2
  
  Knowing that "X + Y = 180" then we can substitute Y for 63. We have that "X + 63 = 180"
- 3
  
  Now we can solve for "X", we get that "X=180- 63"
- 4
  
  The result is X=117. As you can see 117 + 63= 180
- 5
  
  Let's practice with this exercise. We are going to follow the same technique to solve for "X"
- 6
  
  Here we have that "2X + X= 180", we do the same thing as before, we add 2X + X = 3X, so 3X= 180, and then we divide by 3 both sides. The result is "X=60"
- 7
  
  Substituting for X in our original problem, we have 2(X)=2(60) and X=60.
  
  Final result!!! :)

How to Add Up SAT Scores

How to Retake the SAT