monique robles
definition of congruent angles
monique robles
definition of perpendicular lines
substitution property of equality
the theorems and postulates used in the proof
In a two-column proof, the left side shows the "work" you did, while the right side is the "statements" which state what the postulate, reasoning, etc. you used to get where you are on the left side.
Postulates are assumed truths that are used as the bases for reasoning, beliefs and discussions. These statements do not often require proof.
which of the following types of statement can be used to explain the steps of proof?
substitution property of equality
definition of congruent angles
definition of perpendicular lines
substitution property of equality
alternate exterior angles theorem
That one there!
The following is the answer.
vertical angles theorem
triangle sum theorem
guess and conjeture
the theorems and postulates used in the proof