Question

(Fan & Medal)

Answer 1

Substitution or transitive.

Answer 2

no...

Answer 3

@skullpatrol

Answer 4

If AB = EF, and AB = BC, then... what do you know about BC and EF?

Answer 5

If AB = BC and BC = CD, then AB = CD. That is the transitive property.

Answer 6

^ what he said.

Answer 7

Okay thank you both!

Answer 8

You're welcome :)

for an example:

if AB = 2 and EF = 2, and AB = EF = BC, then BC must also be 2.