Question

Anyone know how to solve this ?A half-circle is inscribed within an equilateral triangle such that the diameter of the half-circle is centered on one edge of the triangle and the arc is tangent to the other two sides. What is the diameter of the semi-circle if the triangle has an edge length of 4?

Answer 1

which sentence is the question

Answer 2

A half-circle is inscribed within an equilateral triangle such that the diameter of the half-circle is centered on one edge of the triangle and the arc is tangent to the other two sides. What is the diameter of the semi-circle if the triangle has an edge length of 4?

Answer 3

https://www.khanacademy.org/math/geometry/cc-geometry-circles/inscribed-angles/v/inscribed-and-central-angles