What type of triangle would have these angle measures?

Step-by-step explanation:

It's a RIGHT TRIANGLE because one of the angles has measure 90°.

Equilateral triangle has every angle with the same measure of 60°.

Isisceles triangle has two equal angle with the same measure.

9

Step-by-step explanation:

cross multiply 7/63 by 1/x

so, multiply 7 by x and 63 by 1

you get 63=7x

divide by 7 on both sides and you get 9