Math Problem Statement
Solution
The problem describes a transformation of triangle that involves a 180° rotation about the origin followed by a translation 1 unit to the right, forming triangle .
Let's break down the transformation and solve for the true statements.
1. 180° Rotation about the Origin:
- The rule for a 180° rotation is: .
2. Translation 1 Unit to the Right:
- The translation rule: After rotation, the transformation adds 1 to the x-coordinate, meaning .
Let's now verify each statement:
A) The transformation is given by :
- This is incorrect because the rule for 180° rotation is , and the translation moves the point right, so the correct transformation includes an addition to the x-coordinate, not a subtraction.
B) The transformation is given by :
- This is correct. After a 180° rotation, we apply and then shift 1 unit right, giving .
C) The coordinates of are (2, 2):
- Let's verify by first applying the transformations to point .
- after 180° rotation.
- Then, translate 1 unit right: .
- So, the coordinates of are , not . This statement is incorrect.
D) The coordinates of are (1, -2):
- Let's check point :
- after 180° rotation.
- Then, translate 1 unit right: .
- So, the coordinates of are , not . This statement is incorrect.
E) The coordinates of are (3, -3):
- Let's check point :
- after 180° rotation.
- Then, translate 1 unit right: .
- So, the coordinates of are , not . This statement is incorrect.
Conclusion:
The only correct statement is B). The transformation is given by .
Would you like more details or clarification on any part? Here are some follow-up questions to explore further:
- How do different types of transformations (rotations, reflections) change coordinates?
- What is the general rule for translating points in the coordinate plane?
- How does a 180° rotation affect points symmetrically?
- Can you apply the transformations to other figures, such as quadrilaterals?
- How would the transformation change if it involved reflection instead of rotation?
Tip: Always remember to apply transformations step by step, especially when dealing with multiple operations like rotations and translations!
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Math Problem Analysis
Mathematical Concepts
Coordinate Geometry
Transformations
Rotations
Translations
Formulas
180° rotation: (x, y) → (-x, -y)
Translation 1 unit right: (x, y) → (x + 1, y)
Theorems
Rotation and Translation Theorems
Suitable Grade Level
Grades 8-10
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