ANSWER
a=-2, b=3
EXPLANATION
The given equation is

Recall that:

We simplify the left hand side to get:

For this equation to be true, we must have:
-6a=12 and 2+b=5
This implies that,
a=-2 and b=3
If you move and rotate the shapes and they perfectly line up then they are congruent.
Hope this helps :)
Answer:
∠R = 79°
Step-by-step explanation:
180 - (53 + 48) = 79
∠R = 79°
Answer:

Step-by-step explanation:
6/22 = 3/11
Answer:
c both point and line symmetry.