It’s July! Since it is half a year already, let us look back about what proofs we have learned so far.

For the past year, we have learned the proofs of 7 mathematical theorems, 3 in Geometry and 4 in Algebra. There are also three worked out proofs in triangle congruence. Congruence theorems like SAS, SSS, and ASA are used in these proofs.

**Year in Review – 1st Semester**

- Absolute Value Proofs: Products and Quotients
- Proof of the Converse of the Pythagorean Theorem
- Proof that The Diagonals of a Rhombus are Perpendicular
- A Proof of The Trapezoid Angle Theorem
- The Proof of the Kite Symmetry Theorem
- Sample Proof on Triangle Congruence Part 1
- Sample Proof on Triangle Congruence Part 2
- Sample Proof on Triangle Congruence Part 3
- Slope of Perpendicular Lines Theorem
- The Sum and Product of Roots Theorem

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