Question

If ΔABE ~ ΔACD, find the value of y.

Answer 1

Corresponding parts of similar figures are proportional (their lengths are in the same ratio).
Does that help?

Answer 2

I dont understand any of it.... I was sick yesterday and my teacher wont let me take the book home so Im completely lost.....

Answer 3

Ah, ok. here's an example

Those two triangles are similar if you can multiply a, b, and c by the same number to make a', b', and c'
Or in other words, all the ratios a'/a, b'/b, and c'/c are the same.

Answer 4

Here, 15/13 is not the same as 9/5 or 12/12.
Since there is no common ratio, those triangles are not similar.

Answer 5

In your example, we are told that the triangles are similar, so the ratio of the corresponding sides of the big triangle to the small triangle is 10:6 or 5/3.
That means that the ratio of AD (big triangle) to AE (small triangle) is also 5:3.