Question

(C)
Is it possible to construct a triangle with line segments of length 5 cm, 7 cm,
12 cm? Why?
D
Name the exterior angle formed at the vertex B of the given triangle.​

Answer 1

Answer:

C) We know that the largest side of a triangle is always smaller than the sum of the other two sides.

So, here, (7+5)cm = 12 cm

The sum of the smaller sides is equal to the largest side, so that's why it's not possible to draw a triangle with sides 5 cm, 12 cm and 7 cm