Worksheet Triangle Inequalities
Name ___________________
Decide whether each set of numbers is a triangle.
1) 15, 12, 9 2) 23, 16, 7
3) 20, 10, 9 4) 8.5, 6.5, 13.5
5) 47, 28, 70 6) 28, 41, 13
7) 5, 10, 15 8) 9, 40, 41
9) 12, 2.2, 14.3 10) 6,9, 16
The measures of two sides are given. Between what two numbers must the third side fall.
11) 9 and 15 11) Write an inequality to represent your answer:_____________
12) 11 and 20 12) Write an inequality to represent your answer:_____________
13) 23 and 14 13) Write an inequality to represent your answer:_____________
14) 5 and 8 14) Write an inequality to represent your answer:_____________
15) 15 and 18 15) Write an inequality to represent your answer:_____________
16) 22 and 34 16) Write an inequality to represent your answer:_____________
17) 47 and 71 17) Write an inequality to represent your answer:_____________
18) 21 and 47 18) Write an inequality to represent your answer:_____________
Name the largest and the smallest angle.
19) 20) 21)
List the angles of
∆
ABC from the smallest to the largest.
22)
= = =
17, 21, 18
AB BC AC
23)
= = =
15, 16, 17
AB AC BC
A
C
B
5
6
7
D
F
E
5
4
3
G
J
H
5
5.1
5.03
