Unit 1 Extra Practice - Goethals

What is another name for plane N?

• ABC

• BDE

• Plane T

• BCE

Which names a pair of opposite rays?

• $\overrightarrow{CA}\ and\ \overrightarrow{CD}$

• $\overrightarrow{CB}\ and\ \overrightarrow{CD}$

• $\overrightarrow{BC}\ and\ \overrightarrow{DC}$

• $\overrightarrow{BC}\ and\ \overrightarrow{CD}$

Name the intersection of the two planes.

• $\overline{BD}$

• $\overline{BC}$

• $\overleftarrow{A}\overrightarrow{C}$

• $\overleftarrow{B}\overrightarrow{D}$

E is the midpoint of  $\overline{DF}$ .  

DE = 6x + 5.
EF = 20x - 2.

Find DF.

•  $\frac{1}{2}$  

• 8

• 16

• 28

 $\overrightarrow{BR}$  bisects  $\angle ABC$  .
 $m\angle ABR\ =\ 7x\ +\ 17.$  
 $m\angle ABC\ =\ 76.$  
Solve for x.  

{Only write the number that represents x.}

• $\angle5\ and\ \angle6$

• $\angle5\ and\ \angle8$

• $\angle6\ and\ \angle8$

• $\angle5\ and\angle7$

• (4x, -3x)

• (8x, -6x)

• (4x, -4x)

• (x, 4x)

• (1, 1)

• (8, -13)

• (-1, -1)

• (-10, 11)

•  $\sqrt{73}$  

•  $\sqrt{65}$  

• 5

•  $\sqrt{55}$  

What is the measure of angle 1?