Question

What is an in-circle of a triangle?

Options

• A circle passing through all three vertices of the triangle

• A circle drawn inside a triangle that touches all three sides

• A circle drawn outside the triangle

• A circle that passes through only two vertices

Answer 1

A circle drawn inside a triangle that touches all three sides

Explanation:

The in-circle (or inscribed circle) is defined as a circle drawn inside a triangle such that it touches all three sides at exactly one point each.