Lessons for A.REI.A.1
Two-column and paragraph proofsMatching each statement to a definition, postulate, theorem or property that is already accepted.Lesson
Properties of equality and congruenceCongruence of segments and angles behaves like equality, which is why a shared side can be cited.Lesson
Inverse operations and the properties of equalityDo the same thing to both sides and the equation still holds. This is the license for every step.Lesson
Printable Worksheets
Two-column and paragraph proofs worksheet (PDF)Printable worksheet with answer keyPreview
Properties of equality and congruence worksheet (PDF)Printable worksheet with answer keyPreview
Inverse operations and the properties of equality worksheet (PDF)Printable worksheet with answer keyPreview