10.7- Graphing Circles

Today we practiced graphing circles, both by hand and in our graphing calculators.  We were also introduced to the concept of intersection circles and how this relates to loci- which we will continue discussing tomorrow.

Tonight's homework is P. 703 #23,25,26,31, and 33

10.7- Writing Equations of Circles

Today we learned the standard equation of a circle and how to write equations given the center and radius or enough information to find either of these.  If you were absent, you can find more information about finding the equation of a circle here: http://www.brightstorm.com/math/geometry/pythagorean-theorem/equation-of-a-circle

Tonight's homework is P. 702-703 #3,4,7,11,14,16,17

Chapter 10 Study Project

Your chapter 10 Study Project will be due in one week, Thursday, March 10.  Here are the terms so that you can get started tonight- please remember to include diagrams!:

Tangent (include any theorems and properties)
Central Angle (include its corresponding arc measure)
Chord (include properties of chords from section 10.3)
Inscribed Angle (include how to find its measurement)
Inscribed Polygon (include what you know about inscribed right triangles and quadrilaterals)
Angle Formed by a Tangent and Chord
Angles Inside the Circle Theorem
Angles Outside the Circle Theorem
Segments of Chords Theorem
Segments of Secants Theorem
Segments of Secants and Tangents Theorem
Standard Equation of a Circle
Locus
Area of a Regular Polygon

10.6- Find Segment Lengths in Circle

Today we looked at the relationships between the segments lengths in a circle, specifically of chords, secants, and tangents.

Tonight's homework is P. 692-694 #3,6,9,14,16
Tomorrow we have a quiz on Chapter 10.1-10.6 (Everything we have learned about circles so far).  Please review these sections and be sure that you know all of the properties of circles that we have learned so far.

Check out this animation to help with today's lesson: http://www.classzone.com/cz/books/geometry_2007_na/resources/applications/animations/geom07_ch10_pg691.html

11.4 Part 2 and 11.5- Angles Relationships in a Circle

Today we learned about inscribed polygons of a circle and other angle relationships of a circle, namely Angles inside a circle and outside of a circle.

Tonight's homework is P. 676-677 #13,15,19,21,23 AND P. 683-684 #3,6,9,11, and 13

Check out this animation for more help: http://www.classzone.com/cz/books/geometry_2007_na/resources/applications/animations/geom07_ch10_pg682.html

10.4- Inscribed Angles

Today we investigated the relationship between inscribed angles and central angles of a circle.  If you were absent, please complete the activity found on page 671 of your textbooks and please watch this video:
http://www.brightstorm.com/math/geometry/circles/inscribed-angles

Tonight's homework is P. 676-677 #5,8,16, and 18

10.3- Properties of Chords

Today we began looking at arcs and chords of circles and how they are related.

Along with the Acuity assignment, please complete P. 667-668 #3-15 odds

For those of you who were absent, please read this section of the textbook and check out this helpful video: http://www.brightstorm.com/math/geometry/circles/chords-and-a-circles-center

Have a great break!

BREAK ASSIGNMENT

DUE on MONDAY, FEBRUARY 28, 2011:

Over break (or as soon as you get a chance), please log on to Acuity (https://nyc-acuity.mcgraw-hill.com/index.jsp) and review your most recent 8th Grade Predictive Exam.  Your exam results go with the booklet that I passed out in class today.  Please write down the score that you received and complete all test corrections for any mistakes that you made.  This will count as a test score.  To check your questions that you got wrong, please click on:
1. View Reports
2. 02/09/11 Grade 8 Predictive Assessment
3. Click on any Strand that you did not receive 100%
4. View the item numbers that you got wrong in your booklet that you received today

You login information:
Username: firstnamelastname (no spaces)
Password: StudentID# (9 digit OSIS number)

Please email me at bergerj@nestmk12.net if you have trouble logging in.

10.1- Properties of Tangents Part 2

Today we did an investigation on external tangent segments.

Tonight's homework is P. 656 #21,23,25,29,34

If you missed our activity or need more explanataion, please see the following video, which explains the concept we learned today:
http://www.brightstorm.com/math/geometry/circles/tangent-segments-to-a-circle

10.1- Properties of Tangents Part 1

Today, we did an introduction to circles and began a study on the properties of tangents.

Tonight's homework is P. 655-656 #1-10, 13, 14, and 19

For practice on the vocabulary that we learned today, please see this animation: http://www.classzone.com/cz/books/geometry_2007_na/resources/applications/animations/geom07_ch10_pg655.html