Isosceles triangles have two sides that are the same length, the third is a different length. They also have two congruent (I love using math terms from middle school) angles that are opposite each other and adjacent along the third side.
There's the Equilateral or Equal-angular triangle that has sides of the same length and with the same angles. They're not really as interesting as some triangles.
There's the triangle that has sides of all different lengths and angles of all different measures. The sum of all the angles must be 360 degrees, something about the sum of the angles creating a circle. No one angle can measure 180 or more, something about a straight line can't be an angle...

Sometimes triangles are fantastic, other times they're not the right situation.
Just a thought....
Stephie
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