15 points! 2.5.3 Journal: Proofs of Congruence

The Engineers' Conjectures: The engineers are designing a bridge truss, and they need to prove that two triangles inside the truss are congruent.

1. Complete the table to summarize what you know about each engineer's conjecture: (2 points: 1 point for each row of the chart)

Engineer Conjecture

Natalie

Emma

2. Analyze the conjectures. Who do you think is correct, and why? (1 point)

Analyzing the Data

3. Here is a picture of the bridge truss, and the given information:

Fill out the two-column proof to prove that BED BEF. You may not need to use all the rows. (5 points)

Statement Reason

4. State how you know that BDF is an isosceles triangle. (2 points)

5. Using the previous problem, fill out the two-column proof that ABD CBF. You may not need to use all the rows.

PLEASE HELP ME THIS IS OVERDUE

BTW IF YOU DON"T KNOW SOME OF THEM PLEASE TELL ME WHAT YOU KNOW(LABEL THE NUMBERS)