We began with making up definitions of kite and trapezoid from sketches. Our warm-up was a 4 problem review of polygon sum.
We then checked our answers to warm-up and homework and came up with definitions for kite and trapezoid to record in our Geometric Truth.
Then we did a fill-in-the-blank proof in our notes about the angles of kites: non-vertex angles are congruent (C-36 on p 267) and "vertex angles of a kite are bisected by a diagonal" - c-39 on p 267).
Then we did "verbal proofs" of C-37 and C-38: diagonals of a kite are perpendicular; the diagonal connecting the vertex angles is a perpendicular bisector of the other diagonal.
Quick class discussion over C-39-41: first, what is an isosceles trapezoid? Then, for all trapezoids, consecutive angles between bases are supplementary; pairs of base angles of an isosceles trapezoid are congruent; diagonals of an isosceles trapezoid are congruent.
Some notes attached.
HW #15 (#16 for B day) - p 269-71: 1-6, 15.
1st and 2nd viewed their tests.