G.CO.C.9: Lines and Angles 3
Regents Exam Questions G.CO.C.9: Lines and Angles 3
Name: ________________________
G.CO.C.9: Lines and Angles 3
1 In the accompanying diagram, line a intersects line
b.
3 In the accompanying diagram, lines a and b are
parallel, and lines c and d are transversals.
What is the value of x?
1) ?10
2) 5
3) 10
4) 90
Which angle is congruent to angle 8?
1) 6
2) 5
3) 3
4) 4
¡û?
?
¡ú
2 In the accompanying diagram, parallel lines AB
¡û??
¡ú
and CD are intersected by transversal at points G
and H, respectively, m¡ÏAGH = x + 15 , and
m¡ÏGHD = 2x .
4 In the accompanying diagram, line n is parallel to
line m, line t is a transversal, and m¡Ï1 = 24.
Which equation can be used to find the value of x?
1) 2x = x + 15
2) 2x + x + 15 = 180
3) 2x + x + 15 = 90
4) 2x(x + 15) = 0
What does x equal, in degrees?
1) 24
2) 66
3) 114
4) 156
1
Regents Exam Questions G.CO.C.9: Lines and Angles 3
Name: ________________________
5 In the accompanying figure, what is one pair of
alternate interior angles?
1)
2)
3)
4)
7 In the diagram below, AB is parallel to CD.
Transversal EF intersects AB and CD at G and H,
respectively. If m¡ÏAGH = 4x and
m¡ÏGHD = 3x + 40, what is the value of x?
1)
2)
3)
4)
¡Ï1 and ¡Ï2
¡Ï4 and ¡Ï5
¡Ï4 and ¡Ï6
¡Ï6 and ¡Ï8
20
40
80
160
8 The accompanying diagram shows a football player
crossing the 20-yard line at an angle of 30¡ã and
continuing along the same path.
6 In the accompanying diagram, line ? is parallel to
line m, and line t is a transversal.
Which must be a true statement?
1) m¡Ï1 + m¡Ï4 = 180
2) m¡Ï1 + m¡Ï8 = 180
3) m¡Ï3 + m¡Ï6 = 180
4) m¡Ï2 + m¡Ï5 = 180
What is the measure of angle B, where the player
crosses into the end zone?
1) 30¡ã
2) 60¡ã
3) 150¡ã
4) 180¡ã
2
Regents Exam Questions G.CO.C.9: Lines and Angles 3
9 The accompanying diagram shows two parallel
streets, Main Street and Brooks Road, intersected
by Jay Street. The obtuse angle that Jay Street
forms with Brooks Road is three times the measure
of the acute angle that Jay Street forms with Main
Street.
Name: ________________________
11 Angle A and angle B are complementary angles. If
m¡ÏA = x , which expression represents the number
of degrees in angle B?
1) x ? 180
2) 180 ? x
3) x ? 90
4) 90 ? x
12 If the measure of an angle is represented by 2x,
which expression represents the measure of its
complement?
1) 180 ? 2x
2) 90 ? 2x
3) 90 + 2x
4) 88x
What is the measure of the acute angle formed by
Jay Street and Main Street?
1) 45¡ã
2) 60¡ã
3) 90¡ã
4) 135¡ã
13 The ratio of two supplementary angles is 2:7.
What is the measure of the smaller angle?
1) 10¡ã
2) 14¡ã
3) 20¡ã
4) 40¡ã
10 The accompanying diagram shows two parallel
roads, Hope Street and Grand Street, crossed by a
transversal road, Broadway.
14 The ratio of two supplementary angles is 3:6.
What is the measure of the smaller angle?
1) 10¡ã
2) 20¡ã
3) 30¡ã
4) 60¡ã
15 AB and CD intersect at point E, m¡ÏAEC = 6x + 20,
and m¡ÏDEB = 10x . What is the value of x?
3
1) 4
8
2) 5
3) 10
1
4) 21
4
If m¡Ï1 = 110, what is the measure of m¡Ï7?
1) 40¡ã
2) 70¡ã
3) 110¡ã
4) 180¡ã
3
Regents Exam Questions G.CO.C.9: Lines and Angles 3
Name: ________________________
¡û?
?
¡ú
16 The measures of two complementary angles are
represented by (3x + 15) and (2x ? 10). What is the
value of x?
1) 17
2) 19
3) 35
4) 37
¡û??
¡ú
20 In the accompanying diagram, AB and CD
intersect at E. If m¡ÏAEC = 4x ? 40 and
m¡ÏBED = x + 50, find the number of degrees in
¡ÏAEC .
17 Two angles are complementary. The measure of
one angle is 15¡ã more than twice the other. What is
the measure of the smaller angle?
1) 25¡ã
2) 35¡ã
3) 55¡ã
4) 65¡ã
21 In the accompanying diagram, line m is parallel to
line p, line t is a transversal, m¡Ïa = 3x + 12 , and
m¡Ïb = 2x + 13 . Find the value of x.
18 The accompanying diagram shows intersecting
lines ? and m. Solve for the value of x.
19 In the accompanying figure, two lines intersect,
m¡Ï3 = 6t + 30, and m¡Ï2 = 8t ? 60 . Find the
number of degrees in m¡Ï4.
22 In the accompanying diagram, parallel lines AB and
CD are intersected by transversal EF at points X
and Y, and m¡ÏFYD = 123 . Find m¡ÏAXY .
4
Regents Exam Questions G.CO.C.9: Lines and Angles 3
Name: ________________________
23 Two parallel roads, Elm Street and Oak Street, are
crossed by a third, Walnut Street, as shown in the
accompanying diagram. Find the number of
degrees in the acute angle formed by the
intersection of Walnut Street and Elm Street.
¡û??
¡ú
25 The support beams on a bridge intersect in the
pattern shown in the accompanying diagram. If AB
and CD intersect at point E, m¡ÏAED = 3x + 30,
and m¡ÏCEB = 7x ? 10, find the value of x.
¡û?
?
¡ú ¡û?
?
¡ú
24 In the accompanying diagram, CD ? EF , AB is a
transversal, m¡ÏDGH = 2x , and m¡ÏFHB = 5x ? 51.
Find the measure, in degrees, of ¡ÏBHE .
26 In the accompanying diagram, BY is a diameter of
circle O, the measure of central angle ROY is
(x + 60)¡ã, and the measure of central angle ROB is
(3x ? 20)¡ã. Find the number of degrees in the
measure of central angle ROY.
27 Two angles are complementary. One angle has a
measure that is five times the measure of the other
angle. What is the measure, in degrees, of the
larger angle?
¡û?
?
¡ú
¡û??
¡ú
28 AB and CD intersect at E. If m¡ÏAEC = 5x ? 20
and m¡ÏBED = x + 50, find, in degrees, m¡ÏCEB .
5
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