Question

Determine the number of triangles that can be constructed given the conditions in a-d.

a. m b. Three line segments measure 21 inches, 7 inches, and 4 inches → _
c. RS = 14 cm, m d. m

Answer 1

Only b we can check

• Line lengths are 21in,7in,4in

The rule is sum of two sides must be greater than third side

Check

• 21+7>4
• 7+4<21
• 21+4>7

They can't form a triangle