1. in the figure, angle 1 and angle 3 are vertical angles. if the measure of angle 1 = 120º, what is the measure of angle 3?

90º
120º
180º
60º
2. if the measure of angle 1 = 123º, what is the measure of angle 3?

123º
90º
57º
67º
score: 1 of 1
3. if the measure of angle 1 = 70º, what is the measure of angle 3.

110º
90º
100º
70º
score: 1 of 1
4. which of these is not a segment?

dc

ab

abd

bc

score: 1 of 1
5. which of these is not a ray on the image?

$\overrightarrow{dc}$
$\overrightarrow{ad}$
$\overrightarrow{ab}$
$\overline{bc}$
6. select the obtuse angles.

$\angle nxp$
$\angle rxs$
$\angle pxs$
$\angle nxs$
7. name the line in the figure.

$\overline{bc}$
$\overleftrightarrow{ad}$
$\overrightarrow{dc}$
$\overleftarrow{ab}$
score: 1 of 1
8. if the measure of angle 2= xº, find the measure of angle 4.

xº
90º - xº
180º - xº
2xº
9. which is the right angle in the image?

cef

bed

ced

aeb

10. which of these is not a segment in the image?

$\overline{de}$
$\overline{dc}$
$\overline{ab}$
$\overline{bc}$