Introduction

Online proof project description, Spring 2019.

Math 1

Vertical Angles

Three proofs.

Isosceles Triangle Theorem

Four proofs and one almost.

Quadrilaterals

Two proofs.

Midsegment Theorem

Proofs.

Inscribed Angles

Two proofs.

Math 2

Similar Right Triangles

Two proofs.

Subtle Proofs

Parallel Lines

Proofs.

Quadrilateral Symmetry

Proofs.

You can download a Certificate as a record of your successes.