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Date ___________________
LESSON 4.1
Practice C
For use with pages 216–224
Classify the triangle by its sides. Then find the value of x and classify the triangle by
its angles.
1.
2.
3.
Find the value of x and y.
4.
5.
6.
7.
Find the measure of the numbered angle
8.
9.
10.
11.
12.
13.
14.
m1
m2
m3
m4
m5
m6
Angle Measures The measure of one interior angle of a triangle is 32°. The other
interior angles are congruent. Find their measure.
Name __________________________________
Date ___________________
LESSON 4.1
Practice C continued
For use with pages 216–224
15. In  ABC, mA = 42°. The measure of B is five times the measure of C. Find
mB and mC.
16. Coat Hanger A 30 inch piece of metal wire is used to make the triangular portion
of a coat hanger. One side of this isosceles triangle is 8 inches. Find two different
sets of measurements to make the coat hanger.
In Exercises 17–19, use the following information.
Classroom The desk layout for a classroom is shown in the coordinate system measured
in feet.
17. Find the shortest distance in inches from A to C, C to D, and D to A, if you can walk
between the desks.
18. Find the shortest distance in inches from A to B, B to C, and C to A, if you can walk
between the desks.
19. Find the shortest distance in inches from A to C, C to D, and D to A, if you can not
walk between the desks.