If AB = 10, AD = 8, and AE = 12, what is the
length of EC?

AB is 16 units.

Step-by-step explanation:

Given:

AE = EC

BF = FC

EF = 8 and DF = 10

To Find:

AB = ?

Solution:

Mid Point Theorem:

The Midpoint Theorem states that "the segment joining two sides of a triangle at the midpoints of those sides is parallel to the third side and is half the length of the third side".

AE = EC Given

Therefore E is the Mid Point of AC.

BF = FC Given

Therefore F is the Mid Point of BC.

Therefore,

EF || AB            Mid Point Theorem.

         Mid Point Theorem.

Substituting the values we get

Therefore AB is 16 units.

Step-by-step explanation:

a.)the line for function b is steeper