Question

Which of the following side lengths can form a triangle?

A. 34 mm, 75 mm, and 100 mm

B. 16 cm, 21 cm, and 47 cm

C. 8 ft, 24 ft, and 33 ft

D. 1 in, 2 in, and 3 in

Answer 1

The sum of the length of the two sides of the triangle must be greater than the length of the third side.

A.

34 + 75 = 109 > 100

34 + 100 = 134 > 75

75 + 100 = 175 > 34

CORRECT!

B.

16 + 21 = 37 < 47 NOT

C.

8 + 24 = 32 < 33 NOT

D.

1 + 2 = 3 NOT

Answer: A. 34 mm, 75 mm, and 100 mm