Similar Triangles Panašūs trikampiai.

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Presentation transcript:

Similar Triangles Panašūs trikampiai

Similar Triangles Triangles are similar if they have the same shape, but not necessarily the same size These triangles are all similar: http://www.mathsisfun.com/geometry/triangles-similar.html

What is true about the angles of similar triangles? Answer: They are congruent (sutampantys)

What is true about the sides of similar triangles? Answer: The corresponding sides are proportional.

What is the similarity ratio? Answer: It's the ratio between the corresponding sides.

How to Find if Triangles are Similar? Two triangles are similar if they have: all their angles equal; corresponding sides are in the same ratio.

There are three ways to find if two triangles are similar: AA, SAS and SSS