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1. which angles are adjacent angles?

three lines intersect at point b.
one line goes through point c in the upper left and point m in the lower right.
a second line goes through point y in the lower left and point x in the upper right.
the third line is horizontal through point f on the left and g on the right. (1 point)
anglegmb and anglefbc
anglecbx and anglefbc
anglexbg and anglefbc
anglemby and anglefbc
2. find the sum of the interior angles of a nonagon. (1 point)
140°
1,620°
1,260°
1,450°
3. the measure of angle3 is101º. find the measure of angle4.

two lines intersect. the top angle at the intersection is labeled 1. the right angle is labeled 2. the bottom angle is labeled 3. the left angle is labeled 4. (1 point)
79°
106°
74°
101°
4. find the measure of each interior angle of a regular polygon with 12 sides. (1 point)
1,800°
150°
180°
145°
5. four of the angles of a pentagon measure 85°, 110°, 135°, and 95°. find the measure of the missing angle. (1 point)
115°
95°
135°
85°
6. if a and b are parallel lines and m angle3 = 128º, what is the measure of angle8?

lines a and b are both intersected by line c. 8 angles are formed. angle 1 is above line a and left of line c.
angle 2 is above line a and right of line c.
angle 3 is below line a and left of line c.
angle 4 is below line a and right of line c.
angle 5 is above line b and left of line c.
angle 6 is above line b and right of line c.
angle 7 is below line b and left of line c.
angle 8 is below line b and right of line c.
(1 point)
134º
54º
52º
49º
7. identify the pair of angles as corresponding, alternate interior, both, or neither.

lines l and m are both intersected by an unnamed diagonal line. angle 1 is above line l and left of the diagonal line .
angle 8 is above line l and right of the diagonal line.
angle 2 is below line l and left of the diagonal line.
angle 7 is below line l and right of the diagonal line.
angle 5 is above line m and left of the diagonal line.
angle 4 is above line m and right of the diagonal line.
angle 3 is below line m and left of the diagonal line.
angle 6 is below line m and right of the diagonal line.

angle4, angle7
(1 point)
corresponding
both
neither
alternate interior
8. is line l parallel to line m? explain.
note: not drawn to scale

parallel lines
(1 point)
yes, alternate interior angles are congruent.
no; alternate interior angles are not congruent.
no; corresponding angles are not congruent.
yes; corresponding angles are congruent.