Question

What’s the shortest side’s in triangle ABC?
A) AB
B) AC
C) BC

Answer 1

C

Explanation:

first , calculate the measure of ∠ A

the sum of the 3 angles in a triangle = 180° , that is

∠ A + 80° + 60° = 180°

∠ A + 140° = 180° ( subtract 140° from both sides )

∠ A = 40°

the shortest side in the triangle is the side opposite the smallest angle in the triangle.

the smallest angle is ∠ A = 40° , then

the shortest side is the side opposite ∠ A , that is BC