Math Problem Statement
Solution
The first image represents the parallelogram being rotated counterclockwise about the origin, resulting in . The second image provides statements to verify if they are true about the transformed parallelogram.
Analysis of the Statements:
-
is parallel to :
- True. Parallelism is preserved under rotation since it is a rigid motion.
-
is the same length as :
- True. Distances between points remain unchanged under rotation.
-
has the same measure as :
- True. Angles within a figure remain unchanged under rigid transformations.
-
has the same coordinates as :
- False. The coordinates of change after a rotation of .
Conclusion:
The first three statements are true, and the last one is false.
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Relative Questions:
- What are the coordinates of , , , and after the rotation?
- How is a counterclockwise rotation mathematically defined in terms of coordinates?
- How does rigid motion affect the properties of geometric shapes?
- Can other transformations (e.g., reflection or translation) also preserve angle measures and side lengths?
- How would a clockwise rotation differ from a counterclockwise rotation in terms of final coordinates?
Tip:
When performing rotations, always use the rotation formula:
for counterclockwise.
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Math Problem Analysis
Mathematical Concepts
Transformations
Rotations
Properties of parallelograms
Preservation of geometric properties under rigid motions
Formulas
Rotation formula for 270° counterclockwise: (x, y) → (y, -x)
Theorems
Rigid motions preserve lengths and angles.
Parallelism is preserved under rotations.
Suitable Grade Level
Grades 8-10
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