Download Practice A 1-4

Name
LESSON
1-4
Date
Class
Practice A
Pairs of Angles
Complete the statements.
1. Adjacent angles are two angles in the same plane with a common
and a common
side
vertex
, but no common interior points.
2. A linear pair is a pair of adjacent angles whose noncommon sides
are opposite rays.
3. Complementary angles are two angles whose measures have a sum of
908
.
4. The kind of angle formed by the noncommon sides of two adjacent and
right angle
complementary angles is a
5.
Supplementary
.
angles are two angles whose measures
have a sum of 1808.
6. The kind of angle formed by the noncommon sides of two adjacent and
straight angle
supplementary angles is a
.
Draw your answer in the space provided.
3AMPLEANSWER
7. Sketch /1 and /2 so that
they are adjacent angles.
8. Sketch /1 and /2 so that
they form a linear pair.
3AMPLEANSWER
In an equilateral triangle, all three sides have equal lengths
and all three angles have equal measures. Find the measure
of the following angles.
9. supplement of /A
1208
10. complement of /A
308
!
Draw your answer in the space provided.
11. Sketch /1 and /2 so that
they are vertical angles.
Copyright © by Holt, Rinehart and Winston.
All rights reserved.
3AMPLEANSWER
27
Holt Geometry
Name
LESSON
1-4
Date
Class
Practice B
Pairs of Angles
1808
1. /PQR and /SQR form a linear pair. Find the sum of their measures.
___›
QR
2. Name the ray that /PQR and /SQR share.
Use the figures for Exercises 3 and 4.
137.98
3. supplement of /Z
4. complement of /Y
X :
(110 2 8x)8
9
5. An angle measures 12 degrees less than three times its supplement. Find the
measure of the angle.
1328
6. An angle is its own complement. Find the measure of a supplement to this angle.
1358
7. /DEF and /FEG are complementary. m/DEF 5 (3x 2 4)°, and m/FEG 5 (5x 1 6)°.
Find the measures of both angles. m/DEF
5 298; m/FEG 5 618
8. /DEF and /FEG are supplementary. m/DEF 5 (9x 1 1)°, and m/FEG 5 (8x 1 9)°.
Find the measures of both angles. m/DEF
5 918; m/FEG 5 898
Use the figure for Exercises 9 and 10.
In 2004, several nickels were minted to commemorate the Louisiana
Purchase and Lewis and Clark’s expedition into the American West. One
nickel shows a pipe and a hatchet crossed to symbolize peace between
the American government and Native American tribes.
9. Name a pair of vertical angles.
Possible answers: /1 and /3
or /2 and /4
10. Name a linear pair of angles.
Possible answers: /1 and /2; /2 and /3; /3 and /4; or /1 and /4
11. /ABC and /CBD form a linear pair and have
equal measures. Tell if /ABC is acute, right,
or obtuse.
right
__›
12. /KLM and /MLN are complementary. LM
bisects /KLN. Find the measures of /KLM
and /MLN.
Copyright © by Holt, Rinehart and Winston.
All rights reserved.
28
45°; 45°
Holt Geometry