You can check the following
C=4
C=5
C=11
The angle measure of DBC is 45
You can do this fairly easily on Excel. (its 56)
Answer: 1,3,4
Step-by-step explanation:
The triangles are isosceles. The following notation are for the angles. For example ABD is refer to the angle located in the B vertex, formed by the segments AB and BD.


Then
