Question

The following is an incomplete flowchart proving that the opposite angles of parallelogram JKLM are congruent:

Answer 1

Answer:

(B) corresponding angles theorem

Step-by-step explanation:

Given: A parallelogram JKLM is shown where segment JM is parallel to segment KL and segment JK is parallel to segment ML.

To prove: Opposite angles of parallelogram are equal.

Construction: Extend segment JM beyond point M and draw point P, Extend segment JK beyond point J and draw point Q.

Proof:

It is given that A parallelogram JKLM is shown where segment JM is parallel to segment KL and segment JK is parallel to segment ML.

Extend segment JM beyond point M and draw point P--------By construction

and Extend segment JK beyond point J and draw point Q----By construction

thus, ∠MLK≅∠PML and ∠JML≅∠QJM (Alternate interior angles theorem) (1)

Then, ∠PML≅∠KJM and ∠QJM≅∠LKJ (corresponding angles theorem)  (2)

Using equation (1) and (2) and using the transitive property of equality, we have

∠MLK≅∠KJM and ∠JML≅∠LKJ

therefore, opposite angles of the given parallelogram JKLM are congruent.

Hence proved.

Answer 2

I just took the quiz and the answer is B. 1.Corresponding angles theorem, 2.corresponding angles theorem hope this helps!