Question

1. Name the following triangles and name the three
sides, three angles and three vertices for each of
them.
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Answer 1

These are the three triangles called Equilateral, Isosceles and Scalene

Answer 2

For the first one:
Triangle DEF

For the second one:
Triangle GHI

For the third one:
Triangle XYZ

wherever I have written triangle, you have to draw a small normal triangle we do like I have given in the picture.