Which of the triangles in the diagram are congruent?

A.
triangle 1, triangle 2, and triangle 3
B.
triangle 1, triangle 3, and triangle 4
C.
triangle 3, triangle 4, and triangle 5
D.
triangle 3 and triangle 5
E.
triangle 2 and triangle 5

I would like to answer but where is the diagram. Download it to this page and i will answer your question. Have a great day

Step-by-step explanation:

47 - 90 = 43

43 - 180 = x

x = 137

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.