Find CD and EF, then determine if they are congruent...

Question

fionacndg · Answer

here is the picture and answers.

lncognlto · Answer

Okay, so we first find the length of the sides of both triangles. By looking at the graph, we can see that each has a side of 3 units and another of 2 units:|dw:1389708265738:dw|

fionacndg · Answer

okay, so can we say they are congruent then?

lncognlto · Answer

Now we calculate the length of CD by Pythagoras:$$2^{2} + 3^{2} = 13$$ Therefore,$$CD = \sqrt{13}$$ Now we calculate the length of EF by Pythagoras:$$2^{2} + 3^{2} = 13$$Therefore, $$EF = \sqrt{13}$$Therefore, CD and EF are congruent, as they bother equal the square root of 13.

fionacndg · Answer

ohhhhhhhhhh thanks soooooo much! i understand now!

lncognlto · Answer

Cool cool! :D