Question

How do u justify them?

Answer 1

Question

Answer 2

@zepdrix @jhonyy9

Answer 3

Numbers 9, 11, and 12 are congruent where as 10 is not.

Answer 4

yeah but i need to know what to riught so i can prove its not congruent or congruent

Answer 5

To justify you could say:

The triangles have 3 sets of congruent (of equal length) sides and
The triangles have 3 sets of congruent (of equal measure) angle

OR

Answer 6

oh

Answer 7

So put the triangle that symbol and the other triangle :)

Answer 8

thank you:)