The gcf of the numbers are 15
Your answer should be 3
Use this formula to solve slopes:
m = (y2<span> – y</span>1) / (x2<span> – x</span>1<span>) </span>
Congruent triangles have the exact same three sides and the exact same angles. They are identical. So if you look at your triangles carefully, they are congruent. :)