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GBK Geometry

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GBK Geometry

Jordan Johnson

Today’s plan

- Greeting
- Review Conjectures; New Definitions
- Conjecture & Prove!
- Homework / Questions
- Clean-up

New Definitions

- A kite:
- A dart:

Conjectures

- The diagonals of a parallelogram divide the parallelogram into two congruent triangles. (Atticus)
- If a quadrilateral has two pairs of equal opposite angles, it is a parallelogram. (Eva)
- All rectangles are parallelograms.
- A square’s diagonals bisect the square’s angles. (Erin & Megan)
- A parallelogram’s diagonals create congruent “opposite” triangles.(Graden / Kesh)
- If two opposite sides of one parallelogram equal two opposite sides of another, the two parallelograms are congruent. (Nima)

Conjectures

- If both pairs of opposite sides of one parallelogram equal both pairs of opposite sides of another, the two parallelograms are congruent. (Nima, revised)
- Any two consecutive angles of a parallelogram are supplementary.(Sydney)

Homework

- Spend 20 minutes tonight proving & writing conjectures.
- For Monday, 3/4: Unit 7 (Ch. 6) Test Corrections
- Separate sheet of paper – no new writing on the test
- Name/date/period
- Divide into two sections/columns as usual
- Check correctness of all answers