The ratio of the angle measures of a triangle is 6:4:2.

What is the measure of the largest angle?

90 degrees.

Step-by-step explanation:

6 + 4 + 2 = 12.

So there are 12 divisions and as there are 180 degrees in a triangle the 'multiplier' is 180 / 12 = 15.

The largest angle is 15 * 6 = 90 degrees.