9. Special segments
9.04 The triangle inequality
Interactive practice questions
Given three side lengths $7$7, $12$12, and $17$17:
a
Complete the following statements, using $=$=, $>$>, or $<$<:
$7+12\editable{}17$7+1217
$7+17\editable{}12$7+1712
$17+12\editable{}7$17+127
b
Do these lengths form a valid triangle?
Yes
A
No
B
Easy
< 1min
Given three side lengths $3.2$3.2, $7.4$7.4, and $9.6$9.6:
Easy
< 1min
Given three side lengths $9$9, $4$4, and $5$5:
Easy
< 1min
Given three sides $3.1$3.1, $7.7$7.7 and $11.8$11.8.
Easy
< 1min
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