Answer:
9m+6
Step-by-step explanation:
9 times m is equivalent to 9m and if something is increasing by 6, its being added.
The correct answer is the first choice. You can determine which angles are congruent by looking at the corresponding angles (angles that are in the same position) on the similar trapezoids). The angles would be congruent even though the shapes are not the same size.
A numeric form using exponents.
