There will be one algebra problem on the quiz, probably slopes of sides given vertices.
We warmed up with coordinates of a polygon where we found slopes of the sides and interpreted the type of quadrilateral. We also practice A/S/N. Attached below. A grade was taken for 4 pts on HW.
NEXT TIME WE MEET, I WILL TAKE A GRADE ON YOUR GEOMETRIC TRUTH. IT NEEDS TO BE CAUGHT UP THROUGH C-44.
Students were able to check all homework and ask questions.
Then we devoted the rest of class to proving the parallelogram properties:
- Opposite angles are congruent (#41)
- Consecutive angles are supplementary (#42)
- Opposite sides are congruent (#43)
- The diagonals of a parallelogram bisect each other (#44).
HW #14 (or 15 depending on class) : p 284-6: 1-6, 9, 13-16.
Also write up C 41-44 from pp 282-3 (using your notes to help).
Also if you have not copied all of the earlier conjectures from the handout last block, scroll down to find the handout.
Remember that you cannot glue your copy into your GT, you need to hand-write it.
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more_parallelogram_proofs_and_notes.pdf |