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January 9, 2012  Define (in back of journal) : scale drawing, scale model, scale, and scale factor.  Fred has a photo in which the couch is 8 inches.

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Presentation on theme: "January 9, 2012  Define (in back of journal) : scale drawing, scale model, scale, and scale factor.  Fred has a photo in which the couch is 8 inches."— Presentation transcript:

1 January 9, 2012  Define (in back of journal) : scale drawing, scale model, scale, and scale factor.  Fred has a photo in which the couch is 8 inches long. In real life, the couch is 8 feet long. What is the scale?  If the lamp is 3 feet tall, how tall is it in the photo?

2 EXIT RAMP If the “scale” of a drawing is 1 inch = 2 feet, what is the “scale factor?” EXIT ONLY EXIT 12E

3 January 10, 2012  If a statue was 10 feet tall and you wanted to make a replica 2 feet tall, what is your scale?  Define: similar figures, corresponding sides, corresponding angles, and indirect measurement  Draw two similar rectangles.

4 EXIT RAMP EXIT ONLY EXIT 12E 5” 7” 10” X Solve for X.

5 January 11, 2012  If a 2 foot tall flower casts a 6 inch shadow and the tree beside it casts a 30 inch shadow, how tall is the tree?  Define: SSS, AA & SAS Similarity  (see pg. 828)  Draw two similar triangles using one similarity to show they are similar.

6 EXIT RAMP Triangle ABC Sides = 2, 4, 6 Triangle DEF sides = 4, 9, 12 1.Are these triangles similar? 2.What postulate did you use? EXIT ONLY EXIT 12E

7 January 12, 2012

8 EXIT RAMP If a rectangle is 2” x 3”, what would be the area of a similar rectangle if its scale factor is 4? EXIT ONLY EXIT 12E


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