Question

1. Multiple Choice Which of the following could not represent the side lengths of a triangle?

a. 5cm, 5cm, 5cm.
b. 3cm, 7cm, 2cm
c. 6cm, 8cm, 10cm
d. 4cm, 7cm, 4cm

Answer 1

b. (3cm, 7cm, 2cm)

For the triangle to be possible, any two sides of the triangle can be added and will always sum up to a higher number than the third side.
3+2=5
5<7. Automatically, this triangle is impossible.

a+b=x
x>c

If x
This because of the triangle inequality theorem.

Hope that helped!!!

Answer 2

b. 3cm, 7cm, 2cm

Explanation: