Answer:
1. AAS
2. SAS
Step-by-step explanation:
1. From the graph it can be seen that two pairs of angles are congruent. The side that is not between the two sides is also congruent. Thus we can use AAS (two angles and a side that is not between the two angles) postulate.
2. The graph shows that there are two pairs of congruent sides. We can also prove that angle ACB is congruent to angle DCE because the two angles are vertical. So we can use the SAS postulate.
Hope this helps! :D
