Math 4-5: Similar Polygons

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Presentation transcript:

Math 4-5: Similar Polygons Objective: How to identify similar polygons and find missing measures of similar polygons.

Vocabulary polygon – a closed figure in a plane formed by three or more line segments similar – polygons with the same shape (not necessarily the same size) corresponding parts – parts of congruent or similar figures that match congruent – the same measure scale factor – the ratio of the lengths of two corresponding sides of two similar polygons

Similar Polygons 2 polygons are similar if AND corresponding angles are congruent (have same measure) AND corresponding sides are proportional

Similar Polygons

Identify Similar Polygons

Identify Similar Polygons

Scale Factor ratio of lengths of two corresponding sides of two similar polygons The scale factor from square ABCD to square LMNO is 6/3 or 2 The scale factor from square LMNO to square ABCD is 3/6 or 1/2

Find Missing Measures

Assignment 4-5 PS (a) Graphing Activity – due 10/28 Chapter 4 Test – 10/28

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