I need to solve a two column proof with given: angle bac is a right angle and angle 2 is congrunent to angle three and I have to prove angles 1 and 3 are supplementary

Answer 1

Greetings Maddy...hope your school hear if off to a great start.

Good basic Geometry problem and skill, proofs in reasoning to develop.

I'll help you get started with some clues to help you then develop your ability to answer similar kinds of problems.

Certainly it helps to see the figure in which you're asked to address.

I am making several assumptions but there are the clues.

For a right angle (before the development of the definition of degrees, a right angle was defined as an angle which is equal and congruent to another angle sharing the same side and adjacent to it,)

So with that said angle BAC (I presume) has the same side. If they do, then the angles are congruent.

Since they share the same side and have a congruent side, using the ASA or AAS reasoning you can work toward you proof.

This again, requires an image of what the proof is asking of you.

It is a start.

Let me know if you need further help

J