The incenter of a triangle is the intersection point of which of the following lines in this triangle?
Correct answer: Interior angle bisectors

Tom
Clay,
green and red are rubbish.
blue intersects at right angles to the sides.
Yellow is the only possible. But visually, hard to see if they are angular bisectors.

Laura
Clay, I don't think it's any of them. None of the colored lines appear to bisect the angles.

Clay
So, is it the intersection of the blue, yellow, or green lines?