Unit 04 - Lesson 1A

 Triangle Sum Properties
(pgs. 217 - 224)

Read pgs. 217-220

Vocabulary
(In your notes, define the following words and draw a picture for each word.)
  • triangle
  • scalene triangle
  • isosceles triangle
  • equilateral triangle
  • acute triangle
  • right triangle
  • obtuse triangle
  • equiangular triangle
  • interior angles
  • exterior angles
  • Triangle Sum Theorem*
  • auxillary lines
  • Exterior Angle Theorem*
  • corollary to a theorem
  • Corollary o the Triangle Sum Theorem*
*These should be on index cards. 

Individual Practice
(Continue in your notes.)
  • pg 218:1-2
  • pg 220: 3-6
  • pg 221: 1-7

Facilitated Instruction

Independent Learning