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Chapter 9 Target, Assignment, & Pacing Log
Lesson
9.1
Date
Assignment
Jan
28 (B)
Lesson 9.1 : The Pythagorean
Theorem
HW #8 Page 468: #1-12 all;
Page 469: #15-27 odd, #30
Lesson 9.2: Special Right
Triangles
HW #9 Page 475: #1-14 all,
#17, #26, #27.
Lesson 9.4: The Tangent Ratio
HW #10 Page 491: #1-18 all,
#27-29.
Lesson 9.5:
The sine and Cosine Ratios
HW #11 Page 498: #1-8, #1728, #41-44.
Lesson 9.6 : Solving Right
Triangles
HW #12 Page 505: #1-19, #2122.
Review for chapter test
HW #13 : Chapter 9 Practice
Test worksheet
Performance Task
HW#14: Edmodo
CHAPTER 9 TEST
PDD
9.2
Jan
30(B)
9.4
Feb
3 (B)
9.5
Feb
5 (B)
CAHSEE
TEST
9.6
Feb
10 (B)
Review
Feb
12 (B)
PT
Feb
17 (B)
TEST
Feb
19 (B)
Exploration
Notes
Homework
*Lessons are based on “Big ideas math” Geometry a common core curriculum textbook. To
see the textbook online AND have additional resources, go to www.bigideasmath.com
Edmodo, check often for alternatives to Homework and Projects,
www.edmodo.com
Kahn Academy project, You need to finish your Geometry Mission,
www.khanacademy.org
“A person who never made a mistake never tried anything new. “ Albert Einstein
SOH CAH TOA
Essential Question: How do trigonometric ratios relate to similar right triangles?
Learning Targets:
“I can …”
First
Score
Second
Score
9.1. I can use the converse of the Pythagorean theorem to
classify a right, acute or obtuse triangle.
9.2. I can prove the Pythagorean Theorem using triangle
similarity.
9.3. I can calculate a missing side of a right triangle by using
the special relationships that exist between a 45°-45°-90°
Triangle.
9.4. I can calculate a missing side of a right triangle by using
the special relationships that exist between a 30°-60°-90°
Triangle.
9.5. I can solve and identify the parts of a right triangle.
9.6. I can use trigonometric ratios and the Pythagorean
Theorem to solve right triangles in applied problems.*
Vocabulary: Angle of depression, Angle of elevation, Cosine / Inverse
Cosine, Identity, Pythagorean triple, Isosceles Triangle, Sine / Inverse Sine,
Solve a right triangle, Trigonometric ratio, Tangent / Inverse Tangent.
Prove theorems involving similarity
CCSS.MATH.CONTENT.HSG.SRT.B.4
Prove theorems about triangles. Theorems include: the Pythagorean Theorem proved using triangle
similarity.
CCSS.MATH.CONTENT.HSG.SRT.B.5
Use congruence and similarity criteria for triangles to solve problems and to prove relationships in
geometric figures.
Define trigonometric ratios and solve problems involving right triangles
CCSS.MATH.CONTENT.HSG.SRT.C.6
Understand that by similarity, side ratios in right triangles are properties of the angles in the triangle,
leading to definitions of trigonometric ratios for acute angles.
CCSS.MATH.CONTENT.HSG.SRT.C.7
Explain and use the relationship between the sine and cosine of complementary angles.
CCSS.MATH.CONTENT.HSG.SRT.C.8
Use trigonometric ratios and the Pythagorean Theorem to solve right triangles in applied problems. *
If Time:
Apply trigonometry to general triangles
CCSS.MATH.CONTENT.HSG.SRT.D.9
(+) Derive the formula A = 1/2 ab sin(C) for the area of a triangle by drawing an auxiliary line from a
vertex perpendicular to the opposite side.
CCSS.MATH.CONTENT.HSG.SRT.D.10
(+) Prove the Laws of Sines and Cosines and use them to solve problems.
CCSS.MATH.CONTENT.HSG.SRT.D.11
(+) Understand and apply the Law of Sines and the Law of Cosines to find unknown measurements in
right and non-right triangles (e.g., surveying problems, resultant forces).