Question
These triangles are congruent. If 
is
- 45°
- 55°
- 80°
- 100°
Hint:
In the given question, we have to find 
C which belongs to both the triangles so we can chose any of the triangle for the calculation. For 
, 
is given and to find 
, it is given that the two triangles are congruent so 
. Now as we have two angles of the triangle we can easily find the third side by the theorem the sum of three sides of the triangle is 180
.
The correct answer is: 80°
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