Question

The triangles below are similar.
What is the value of x?

Answer 1

10

Explanation:

the answer being ten is because the smaller triangle is half the size of the bigger one.

ED is the same side as AB so multiply by 2. Because 8/4=2

Answer 2

10

Explanation:

Since EF=4, and BC=8, you can see the triangle increases by 2

So, 5*2=10