what is similar triangle. proof basic theory and case theory take some examples and verify.
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In geometry, two shapes are similar if they are the same shape but different sizes. You could have a square with sides 21 cm and a square with sides 14 cm; they would be similar. An equilateral triangle with sides 21 cm and a square with sides 14 cm would not be similar because they are different shapes.
Similar triangles are easy to identify because you can apply three theorems specific to triangles. These three theorems, known as
- Angle - Angle (AA),
- Side - Angle - Side (SAS),
- Side - Side - Side (SSS), are foolproof ❂ methods for determining similarity in triangles.
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