The answer is A.
AKA 1.6
Answer:
Answer B
3 non collinear point
9
Step-by-step explanation:
2*2=4*2=8+2=10-1=9
31
20
1/2(a+b)=180
1/2(6+12)=18
1/2(18)=180
9/9=180/9
=20