Tuesday, May 19, 2009
Geometry (Class 81)
Announcements
Test Friday: Right Triangle Trigonometry, Lines
Lesson Title
Circles (1): Inscribed Arcs
Overview
During the opener today students will have the opportunity to continue their work on the latest trig. problems. Afterwards we will begin our study of circles by investigating the relationship between angles and arcs.
Textbook Sections
§10.3 (Txt. p.613) Inscribed Angles
Vocabulary
circle
central angle
arc
arc length
arc angle
inscribed angle
inscribed arc
Key Attitudes
Math is about building up understanding one idea at a time.
Key Ideas
The measure of a central angle is equal to the measure of the arc it insribes.
If a central angle and an inscribed angle inscribe (capture) the same arc, then the measure of the central angle is twice the measure of the inscribed angle.
Key Skills
I can use correct terminology to describe parts of a circle.
I can determine the measures of central angles and inscribed arcs using the relationship between them.
Turn-In (#80)
Trig. Practice Problems
Handouts
Chapter 9- Lesson 7: Putting Trig. to Work
Assignment
Test Corrections
Trig. Problems
Disclaimer- The assignment as stated in class is the official assignment. Every effort is made to keep this posting accurate, but you should refer to what was stated in class as the final word.
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