Warm-up dealt with centroid and median ratios from algebraic perspective and area of a triangle. Discussed kites and proved why two of their angles are congruent from SSS and CPCTC. Also saw how long diagonal is both a perpendicular bisector and an angle bisector, and developed a formula for the kite area. Passed out practice assessment ahead of next class meeting's real test.
Notes from board
Homework:
Complete practice assessment (blank) [Solutions]
Actual assessment is Tues/Wed
Resources
centroid concept: link
centroid and median ratio: link
coordinate centroid formula: link
orthocenter identification: link
incenter identification: link
circumcenter identification: link
some examples of proofs: link 1 link 2 link 3
Went over practice assessment, then took real assessment on triangle centers and reviewing triangle proofs. Worked on using properties of kites to find area and perimeter, then classified types of quadrilaterals and learned about their properties by constructing a foldable.
December Calendar A-days B-Days
Notes from board
Blank Foldable
Completed Foldable (will help to complete hw)
Homework for A blocks
p. 215 #11 and 12
p. 216 #6
p. 219 #13 [CO-C11a and CO-C11b]
Homework for B Blocks
Watch and fill out foldable from class as you watch: link
Resources
diagonals of a parallelogram link [at 8:15]
sides of a parallelogram: link
angles of a parallelogram link [at 5:05]
angles of a rhombus: link
Warm up dealt with parallelogram diagonals and angle relationships. Finished foldables in A blocks, then went over homework and saw quadrilaterals in geometric art. Did several rounds of practice problems regarding parallelograms, rhombi, and rectangles, then applied these skills to a coordinate grid and saw how to prove a quadrilateral is each type using slope, distance, and midpoint
Notes from board
Homework
Complete practice assessment [blank copy] [SOLUTIONS]
Assessment is on Monday (can use foldable and notes, cannot use practice test)
Resources
sides of a parallelogram: link
angles of a parallelogram link [at 5:05]
diagonals of a parallelogram link [at 8:15]
angles within a rectangle: link [at 5:52]
classifying a quadrilateral on the coordinate plane: link 1 link 2 link 3