3 angles,3 sides,sides,paralell,right angles,acute angle,skaline, isoseles,triangle,3sides,angles, sides,line of symmetry,equallateral,congruent,equivilent,line of symetry,equal,3 angle,cosine,hypotenuse,congruence,right triangle,congruent, 3 sides,scalene triangle,equallateral,,isosceles triangle,verticies,equailateral triang,sin,180°,