Answer:
I'm not sure
Step-by-step explanation:
I don't even think that is possible
Answer: 17
21-4=17
4+17=21
21+17=38 and so on..
Answer: Add 2 to each side
Step-by-step explanation:
9m-2=16
+2 +2
9m=18
3. ∠1+∠2=180° and ∠2+∠3=180°
4. they are supplementary
5. ∠1+∠2=180°=∠2+∠3
6. ∠1+∠2=180°=∠2+∠3
∠2 are same in both side so ∠1=180°-∠2 =∠3=180°-∠2
7.
Answer:
yes it is
Step-by-step explanation:
it is quadrilateral