Question

Given:
A, B, and C are rt. 's

Prove:
ABCD is


Which of the following reasons would complete the proof in lines 3 and 5?

Definition of parallel.
Two lines to same line are parallel.
Definition of right angles.

Answer 1

" rt. 's" right triangles:?

Answer 2

i think so..

Answer 3

I am going to say option B.) as the definition states;
"Theorem: Two or more lines which are parallel to the same line will be parallel to each other. Consider a line l, and consider two more lines m and n such that l ∥ ∥ m and l ∥ ∥ n, as shown below: The distance between l and m is x, and the distance between l and n is y."

According to cue math;
https://www.cuemath.com/geometry/lines-parallel-to-the-same-line/#:~:text=Theorem%3A%20Two%20or%20more%20lines%20which%20are%20parallel,the%20distance%20between%20l%20and%20n%20is%20y.

I hope that helps!

Sincerely,
ℂ𝕣𝕖𝕖𝕕

Answer 4

A, B, and C are rt. 's
so this mean A,B and C are right angles

Answer 5

@Creed