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 Take a protractor from the front.  Take a piece of graph paper from the front.  Find your new seat.  The scale on a map is 7cm : 10km.  If two cities.

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Presentation on theme: " Take a protractor from the front.  Take a piece of graph paper from the front.  Find your new seat.  The scale on a map is 7cm : 10km.  If two cities."— Presentation transcript:

1  Take a protractor from the front.  Take a piece of graph paper from the front.  Find your new seat.  The scale on a map is 7cm : 10km.  If two cities are 56cm apart on the map, what is the actual distance in km between the two cities?

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3  Develop a definition and an intuitive concept of similarity  Define similar polygons  Use the definition of similar polygons to solve problems  Use problem solving skills

4  You know that figures that have the same shape and size are CONGRUENT figures.  Figures that have the same shape but not necessarily the same size are SIMILAR figures. Congruent Polygons Similar Polygons

5  They have common characteristics, but they are not similar.  You can not enlarge or reduce a given rectangle to fit over every other rectangle.  What do you think about other types of geometric figures such as squares, circles, and triangles?

6 What Makes Polygons Similar? the handout

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8 Did you need both conditions?

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15 Dilations on a Coordinate Plane

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20  Develop a definition and an intuitive concept of similarity  Define similar polygons  Use the definition of similar polygons to solve problems  Use problem solving skills

21 1. Find the missing side lengths. Explain. 1. Determine whether or not the polygons are similar. Explain why or why not.


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