McGraw Hill Glencoe Geometry, 2012
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McGraw Hill Glencoe Geometry, 2012 View details
7. Three-Dimensional Figures
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Exercise 52 Page 74

What kind of special angle pairs do you see on the diagram?

x=8 and y=46

Practice makes perfect

Let's take a look at the given diagram.

We can see that the angles whose measures are 5x+6 and 17x-2 form a linear pair. Therefore, the sum of these measures equals 180. ( 5x+6)+( 17x-2)=180 Let's find the value of x by solving this equation.
(5x+6)+(17x-2)=180
â–Ľ
Solve for x
5x+6+17x-2=180
22x+4=180
22x=176
x=8
The value of x is 8. Now, notice that the angles whose measures are 5x+6 and y are vertical angles. Therefore, they are congruent. 5x+6= y Let's find the value of y by substituting x= 8 and solving this equation for y.
5x+6=y
5( 8)+6=y
â–Ľ
Solve for y
40+6=y
46=y
y=46