Question

20 points! Please Help!! What is the missing step in this proof?

A.

Statement: slope of = slope of


Reason: definition of slope


B.

Statement: slope of = slope of


Reason: Transitive Property of Equality


C.

Statement: DF = BC


Reason: Corresponding sides of congruent triangles are congruent.


D.

Statement: ∆ADF ≅ ∆ABC


Reason: ASA

Answer 1

Answer:b

Explanation:

Answer 2

The answer is B

Statement: slope of DF = slope of BC

Reason: Transitive Property of Equality

Explanation:

∵ He find the slope of BC from point B and point C

∵ He find the slope of DF from the mid-point of AB ad the mid-point of

AC

∵ The two answers are equal

∴ The two slopes are equal

∴ Statement is slope of DF = slope of BC

∴ Reason is transitive property of equality