physical, mental, and social btw im in the ninth grade and i know this lol :)
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equilateral triangle , isosceles triangle , scalene triangle
Physical, emotional/mental,
Make a cross in the middle
to construct a triangle, we need 3 parts / elements out of which one should be a side
A triangle has 6 parts ... 3 sides and 3 angles. It's possible for two triangles to have as many as 3 of their parts congruent, and the triangles still not be congruent.