D. 10
m<3 = 80 - (10) = 70
m<7 = 90 - (20) = 70
Answer:
10.25
Step-by-step explanation:
Answer:
(6,-3) or x=6 y= -3
Step-by-step explanation:
SSS or Side Side Side Theorem.
We have congruent triangles when corresponding sides are congruent; we call it a theorem but that's pretty much the definition of congruent triangles.