3 Select the correct triangles.
Identify the triangles that are right triangles.
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Triangle A (Very Left) and Triangle D (Very Right)

Step-by-step explanation:

Triangles A and D are right triangles because one angle in each of those triangle is a 90 degree angle.

Hope it helps!

6, 10

9, -13

12, -21

18, -23

step-by-step explanation:

you just add 6 to the x-coordinate and subtract 10 from the y-coordinate.

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled