Question

The figure is a triangle.

What is the first step of indirectly proving this statement?

Assume the figure does not have three sides.

Assume the figure is a triangle.

Assume the figure is not a triangle.

Assume the figure has three sides.

Answer 1

assume the figure has three sides.

(a figure with three sides is always a triangle)

Answer 2

C) Assume the figure is not a triangle

Explanation:

An indirect proof, also called a proof by contradiction, is a roundabout way of proving that a theory is true. When we use the indirect proof method, we assume the opposite of our theory to be true.

So in the first step, we assume the figure is not a triangle.

Answer: C) Assume the figure is not a triangle.

Hope this will helpful.

Thank you.