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The screenshots you uploaded show a problem from Khan Academy dealing with congruence and transformations. The focus is on whether triangles \( \triangle ABC \) and \( \triangle EDF \) are congruent and if rigid transformations were used properly.

### Here’s a breakdown of the problem:

- **Rigid Transformations**: These include translations, rotations, and reflections. They preserve the size and shape of a figure, so if two figures are congruent, they can be mapped onto each other using rigid transformations.

- **Analysis of the Problem**: 
  - In the problem, Amad attempted to determine if \( \triangle ABC \) and \( \triangle EDF \) are congruent by applying a sequence of transformations.
  - You have to determine if his conclusion was correct or if there was an error in the reasoning or execution of the transformations.

### Answer Choices:
1. **A** suggests that rigid transformations were not the only transformations used, so the figures aren't congruent.
2. **B** states that it's possible to map \( \triangle ABC \) onto \( \triangle EDF \) using rigid transformations, but they still aren't congruent.
3. **C** asserts that there is no error, implying the figures are congruent based on the transformations used.

### Strategy to Solve:
1. **Check Congruence**: Two figures are congruent if their corresponding sides and angles are equal.
2. **Check Transformations**: Rigid transformations (translation, rotation, reflection) must map one triangle onto the other without altering its size or shape.

Given the diagrams and explanation, it looks like the figures were mapped using rigid transformations. Whether they are congruent depends on if their sides and angles are exactly equal after transformations.

Would you like a more detailed explanation of how to apply these transformations, or do you have any specific questions? 

Here are 5 related questions to deepen your understanding:
1. What are the different types of rigid transformations, and how do they preserve congruence?
2. How can you determine if two figures are congruent without using transformations?
3. What are non-rigid transformations, and how do they affect congruence?
4. How do you perform a reflection or rotation of a triangle using a coordinate grid?
5. Why is congruence important in geometric proofs and constructions?

**Tip:** When analyzing congruence, always check that all corresponding sides and angles match after performing the transformations!

Amad was curious if triangles ABC and EDF were congruent. He was able to map one figure onto the other using a sequence of transformations. Were the figures congruent or was there an error in his method?

Explore how Amad used rigid transformations to determine if triangles ABC and EDF are congruent. Analyze the problem of mapping figures using transformations such as translations, rotations, and reflections in this Grade 8 math problem.

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