Geometry 21 May 2013 1) Empty your group folder. 2) Warm Up Find the volume and surface area.

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Presentation transcript:

Geometry 21 May ) Empty your group folder. 2) Warm Up Find the volume and surface area

Objective Students will review geometry topics and be able to translate and reflect geometric figures. Students will work timed problems, collaborate with a partner to find/ correct errors and work with their group. DUE TUESDAY: Proofs using Similarity DUE FRIDAY: Review Packet

BOOKS TURN IN YOUR BOOK TO THE LIBRARY AS SOON AS YOU ARE FINISHED WITH IT! Do you want it to help study for the final? THEN TURN IT IN Right after your final! You won’t use it? Turn it in now! :0

Project Presentations AUDIENCE- please take notes as students present and work any problems that are given PRESENTERS- Clear, concise; 3 – 5 minutes AUDIENCE- Attentive, good listeners, taking notes

Transformations- see page 376

Rule: (x,y)  (x - 7, y - 3)

about the x-axis Example #1: Reflect the object below about the x-axis: Name the coordinates of the original object: A B C D A: (-5, 8) B: (-6, 2) C: (6, 5) D: (-2, 4) A’ B’ C’ D’ Name the coordinates of the reflected object: A’: (-5, -8) B’: (-6, -2) C’: (6, -5) D’: (-2, -4) How were the coordinates affected when the object was reflected over the x-axis? How were the coordinates affected when the object was reflected over the x-axis?

about the y-axis Example #2: Reflect the object below about the y-axis: Name the coordinates of the original object: Y J T T: (9, 8) J: (9, 3) Y: (1, 1) J’ T’ Y’ Name the coordinates of the reflected object: T’: (-9, 8) J’: (-9, 3) Y’: (-1, 1) How were the coordinates affected when the object was reflected over the y-axis? How were the coordinates affected when the object was reflected over the y-axis?

Complete Transformations On a Coordinate Plane Handout Summary (x,y)  (-x, y) is a reflection across the y-axis (x,y)  (x, -y) is a reflection across the x-axis (x,y)  (-x, -y) is a rotation about the origin (x,y)  (ax, ay) is a dilation (multiply each coordinate by a scale factor)

Project Presentations AUDIENCE- please take notes as students present and work any problems that are given PRESENTERS- Clear, concise; 3 – 5 minutes AUDIENCE- Attentive, good listeners, taking notes

Finished? Work on REVIEW PACKET- due FRIDAY

Debrief What do you need to review to be ready for the final exam? Area/ Surface Area/Volume Pythagorian theorem/ pythagoras in a box Similarity- triangles/ shadows/ heights Trigonometry- SOH CAH TOA Circle Properties Proof