Use Proportions to Solve Geometry Problems

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Presentation transcript:

Use Proportions to Solve Geometry Problems 6.2 Use Proportions to Solve Geometry Problems

CROSS PRODUCT PROPERTY

PROPERTIES OF PROPORTIONS

EXAMPLE Write three true proportionality statements

EXAMPLE Is the following statement true or false. Why?

EXAMPLE

Your Turn

SCALE DRAWINGS AND SCALE Scale Drawing: A drawing that is the same shape as the object it represents Maps, Blueprints, Paintings, Photographs Scale: A ratio that describes how the dimensions in the drawing relates to the actual dimensions of the objects

EXAMPLE The distance between two locations on a map is given along with the actual distance between the locations. Find the scale of the map. Map Distance: 3 in; Actual Distance: 100 yd Map Distance: 16 in; Actual Distance: 800 ft

EXAMPLE The blueprint shows a scale drawing of a cell phone. The length of the antenna on the blueprint is 5 cm. The actual length of the antenna is 2 cm. What is the scale of the blueprint?