December 3 and 4

L 57   5, 8, 20, 26, 27

L 58   1, 2, 3, 13, 18

L 59   14, 16, 21, 27, 30

L 60   4, 5, 22, 29, 30

Test 11   1, 3, 7, 8, 9, 12, 13, 14, 15, 20

Test 12 (in class 1/21 and 1/22)

L 61-64 Notes (already filled-in; please read over them before our next class)   

Formula to find area of a triangle given side lengths

  

Formula to find area of a triangle given coordinates of vertices 

$(x_1,y_1)$

$(x_2,y_2)$

$(x_3,y_3)$