If ABC is congruent to EDF where the coordinates of A(-1,1),B(2,4),and C(3,1) what is The measure of EF

EF is 4 units.

Step-by-step explanation:

It is given that the two triangles are congruent to each other i.e.

Coordinates are given as:

A(-1,1)

B(2,4)

C(3,1)

As per the property of congruence, all the corresponding sides and angles of the two triangles are equal to each other.

i.e. AB = ED

BC = DF

AC = EF

We are given with the coordinates of points A, B and C here from which we can easily calculate the side AC using the distance formula.

Where are the coordinates of the two points whose distance is to be calculated.

So,

Hence, AC = EF = 4 units