Question

Which rule describes the composition of transformations that maps ΔABC to ΔA"B"C"?

Answer 1

Thank you for asking this question. The options for this question are missing: here are the missing options:

A) rm • RB', 90°

B) RB', 90° • rm

C) rm • RB', 270°

D) RB', 270° • rm

Answer

The picture for this question is also missing if you look at that picture the starting angle is ABC and if we look at the reflection then we will get A'B'C

and if we consider rotating it 270 degrees then we will get the ΔA"B'C"

So the correct answer for this question would be the third option.

If there is any confusion please leave a comment below.

Answer 2

The question is incomplete.

However,

Transformation: To manipulate the shape of a point or a line the pre-image and the final image of the point along with it's position is the transformation.  

Types:

• Translation
• Rotation
• Reflection  
• Dilation

To map the triangle ABC to triangle A"B"C"  a reflection across line n followed by a 270° rotation should be done.

Hence, rm • RB', 270 degrees is the rule that describes the composition of transformations that maps ΔABC to ΔA"B"C"