$\overline{VX}$  

 $\overline{WB}$  

 $\overline{BV}$  

A line that goes from one corner to the opposite corner

a line that goes from top to bottom

the side of the shape

$\overline{AB}$

$\overline{DE}$

$\overline{AC}$

$\overline{CE}$

$\overline{BD}$

$\overline{AD}$

 $\overline{AB}$  

 $\overline{DA}$  

 $\overline{BD}$  

add up to 180 degrees

are equal to each other

are right next to each other

$\angle1\cong\angle2$

$\angle3\cong\angle2$

$\angle4\cong\angle1$

add up to 180 degrees

are equal to each other

are opposite of each other

$\angle1+\angle2=180$

$\angle4+\angle2=180$

$\angle3+\angle4=180$

50

180

130

50

180

130

$\angle1\cong\angle2$

$\angle5\cong\angle7$

$\angle4\cong\angle6$

$\angle8\cong\angle5$

 $\angle1+\angle5=180$ 

 $\angle5+\angle7=180$ 

 $\angle4+\angle1=180$ 

 $\angle8+\angle5=180$ 

$\angle5\cong\angle8$

$\angle2\cong\angle6$

$\angle1\cong\angle8$

$\angle4\cong\angle5$

6

-6

-1

1

 $13x-6$  

 $9x-6$  

 $9x+14$  

 $x=14$