Question

Find the length of the following sides:
DF
AB
EF

Answer 1

DF) = 10

AB) = 5

EF) = 12.5

Explanation:

For length AB

`3^(2) +4^(2) = AB^(2)` -> 9+16=
`√(25)` -> 5

For length DF

We know that AD is 2.5 times smaller than DE (7.5 / 3)

Now we can use that to determine length DF

BD = 4, DF = 4*2.5 = 10

using the Pythagorean theorem, you can find EF:

`DE^(2) +DF^(2) =EF^(2)`

`7.5^(2)+ 10^(2) =12.5`