Scalene triangle = All sides are different lengths
Isosceles triangle = Two sides have the same length
Equilateral triangle = All three sides are the same length
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perimeter
This stands for side-side-side. It means if two triangles have three sides that are the same length, than they triangles are congruent.
Nothing. If a side ,an angle, and a side are the same the triangles are congruent.
To prove that two or more triangles are similar, you must know either SSS, SAS, AAA or ASA. That is, Side-Side-Side, Side-Angle-Side, Angle-Angle-Angle or Angle-Side-Angle. If the sides are proportionate and the angles are equal in any of these four patterns, then the triangles are similar.
SSS- side side side SAS- side angle side ASA- angle side angle There is also: AAS- angle angle side For right triangles: HL- hypotenuse leg