Converting Two Column Proofs To Paragraph Proofs.

Your teacher is asking you to write a proof, but not just that; she also wants you to write it as paragraph proof. How are you supposed to do it?

One solution to the above described situation, it is that you may practice converting two column geometric proofs to paragraph proofs. This lesson does precisely that. You will see in a step by step mode how this process takes place! One very useful feature throughout the lesson is that you are given the opportunity to solve very similar problems on the screen with the markers tools menu and your stylus.

Lesson's Content

Lesson In PDF Format (no animations)

PURCHASE INFORMATION

Lesson's Glossary

Alternate exterior angles
Exterior angles on alternate sides of the transversal (not on the same parallel line)

Alternate interior angles
Interior angles on alternate sides of the transversal (not on the same parallel line)

Complementary angles
Two positive angles that when added give 90 degrees.

Corresponding angles
Any pair of angles in similar locations with respect to a transversal

Parallel lines
Two or more coplanar lines that have no points in common or are identical.

Perpendicular lines
Two segments, rays, or lines that form a 90 degree angle.

Postulate
A statement assumed to be true without proof.

Proof
A sequence of justified conclusions used to prove the validity of an if-then statement.

Supplementary angles
Two positive angles whose measures add to 180 degrees, a straight line.

Theorem
A theorem in mathematics is a proven fact. A theorem about polygon must be true for every polygon; there can be no exceptions. An idea which works in several different cases is not enough.

Transversal
A line that intersects  others.

 

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