Download Chap 4 Test Review Lesson Plan - epawelka-math

Elizabeth Pawelka
Chapter 4 Review
3/1/12 p.1
Geometry
Lesson Plans
3/1/12
Chapter 4 Test Review
Warm-up and Review (15 minutes)
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Warm-up (10 minutes) Practice Book. They do warm-up when they are done with quiz:
Practice 4-5, p. 48: 1, 2, 4-12, 16-22
Go over Warm-up (5 minutes)
Review Homework from last night: (15 minutes) ask for any specific questions
pp. 213 – 215: #3 – 26, 28, 33 – 37, 40
Be prepared to go over #37.
37. For points (0,4) and (4,0), find 6 points that could be the third vertex of an isosceles right triangle.
Teacher Input (20 minutes)
Review:
Go over:
 Congruent Polygons
o Identify corresponding congruent parts (by diagram and congruence statement)
o Write congruence statements
o Find missing measures
 Congruent Triangles – always must show 3 things
Elizabeth Pawelka
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Chapter 4 Review
3/1/12 p.2
o SAS, SSS, ASA, AAS, HL
o CPCTC
o Note that these will NEVER work: AAA, SSA
Isosceles Triangles
o Parts (legs, base, vertex angle, base angles)
o Isosceles Triangle Theorem
o Converse Isosceles Triangle Theorem
o Equilateral/Equiangular Corollary
o Bisect Vertex Angle -> Perpendicular Bisector
Go over some problems I noticed in their quizzes:
o naming angles
o order matters in congruency statements
o make sure final statement matches what you are being asked to prove
o perpendicular bisector tells you TWO things. Perpendicular gives you right angles; bisector
gives you congruent segments (or angles)
o if given “AB bisects DC” you can’t assume that DC also bisects AB.
o note difference between a midpoint (point) and bisector (segment)
Examples: don’t plan to go over them completely – show them to be sure they know HOW to do it:
Example 1:
set up equation to find x:
5x-8 = 2x+7 (we did this in a previous class)
Example 2: (cont’d from example 1) – note the instructions are to find measurement of AB and ED
this would be the same equation
 ΔABC ≅ ΔEDF
5x-8 = 2x+7
 AB = 2x+7 and ED = 5x-8
 Find AB and ED
Use order of congruency statement instead of
picture
Elizabeth Pawelka
Chapter 4 Review
3/1/12 p.3
Example 3: find x and y
angle c = 50
180 = 50+50+2y => y=40
40+50+x = 180 => x=90
Use this picture to review (and mark) congruent angles you can find with parallel lines and
transversals: Corresponding, AIA, Alternate Exterior, Vertical
Guided Practice and Homework (40 minutes)
Test Review Work (to be finished for homework and turned in on test day)
 pp. 233-235, 1-36: write proofs for 34 and 35
 p. 236, 1-14: write proofs for 13, 14
Remind them to practice 2-column and Flow Proofs!