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If the angles of two triangles are equal the triangles are similar.

AAA If you have three angles on both triangles these must be equal for the triangles to be similar.

SAS If you have an angle between two sides and the length of the sides and the angle are the same on both triangles, then the triangles are similar.

And SSS If you know the three sides

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Q: How you can prove that the angles of two triangles are equal?
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Are triangles equilateral?

Some triangles are equilateral, but not all of them. There are three types of triangles. Triangles which have three equal sides and three equal angles are called equilateral triangles. Isosceles triangles have two equal sides and two equal angles. Scalene triangles have no equal sides and no equal angles.


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What are three ways you can prove that triangles are similar?

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What is the sum of the angles in a four sided shape?

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What is the name of a triangle with 2 equal angles?

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Are triangles congruent if so how do you know?

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Are angles in an isoceles triangle equal?

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How can you use SSS with CPCTC?

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