Math Problem Statement
i know the lines are parallel if praluline have the same store
I know the lines are perpendicular if their slopes are opposite reciprocals Consider the connection between corresponding points for each of the transformations; to visualize the pathway the points might follow between image and pre-image, which of the following statements are true and which are false? Draw a sketch to accompany your response.
a. In a reflection, pairs of corresponding points lie on parallel lines.
True True or False?
b. In a translation, pairs of corresponding points are on parallel lines.
True or False? C In a rotation, pairs of corresponding points are on parallel lines.
(True or False?
d. In a reflection, pairs of corresponding points lie on segments perpendicular to the line of reflection.
True or False?
e. In a rotation, pairs of corresponding points lie on concentric circles.
True or False? f. In a translation, pairs of corresponding points lie on concentric circles.
True or False?
Solution
Let's analyze each statement and decide whether it is True or False, along with brief reasoning. I'll also describe how to visualize these transformations:
a. In a reflection, pairs of corresponding points lie on parallel lines.
False – In a reflection, corresponding points are mapped across the line of reflection, and these points lie on lines perpendicular to the line of reflection, not on parallel lines.
Sketch: The pre-image and image are on either side of the line of reflection, with lines connecting corresponding points that are perpendicular to the line of reflection.
b. In a translation, pairs of corresponding points are on parallel lines.
True – In a translation, all points are moved by the same distance and in the same direction, so the lines connecting corresponding points will be parallel to each other.
Sketch: Visualize the pre-image and its image shifted, with lines between corresponding points showing parallel, equal-length segments.
c. In a rotation, pairs of corresponding points are on parallel lines.
False – In a rotation, corresponding points lie on arcs centered at the point of rotation, and lines connecting corresponding points are not parallel, since they form angles at the center of rotation.
Sketch: Picture the pre-image and image rotated around a center, with lines between corresponding points forming radii of circles around the center.
d. In a reflection, pairs of corresponding points lie on segments perpendicular to the line of reflection.
True – As mentioned earlier, in a reflection, corresponding points are mapped across the line of reflection, and the segments connecting corresponding points are perpendicular to the line of reflection.
Sketch: The pre-image and image on either side of the line of reflection with segments connecting corresponding points at right angles to the line of reflection.
e. In a rotation, pairs of corresponding points lie on concentric circles.
True – In a rotation, all points are rotated around a single point (the center of rotation), and corresponding points lie on circles that share the same center but may have different radii. These are concentric circles.
Sketch: Concentric circles around a center, with corresponding points lying on the same circles.
f. In a translation, pairs of corresponding points lie on concentric circles.
False – In a translation, corresponding points are moved in straight lines, not in circular arcs, so they do not lie on concentric circles.
Sketch: Visualize the translation with parallel lines connecting the pre-image and image, showing that the points do not follow circular paths.
Let me know if you would like further details or a sketch of any of these explanations!
5 Related Questions:
- How do you find the slope of a line between two points?
- What is the relationship between translations and vectors in geometry?
- How do you determine if two lines are parallel or perpendicular using slopes?
- What is the significance of the center of rotation in geometric transformations?
- How can reflection be used to prove symmetry in a shape?
Tip:
When working with geometric transformations, always consider the direction and distance of point movements to visualize how corresponding points are related.
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Math Problem Analysis
Mathematical Concepts
Geometry
Transformations
Reflections
Rotations
Translations
Slopes of lines
Formulas
Slope of a line: (y2 - y1) / (x2 - x1)
Conditions for parallel lines: equal slopes
Conditions for perpendicular lines: opposite reciprocal slopes
Theorems
Reflection Theorem
Rotation Theorem
Translation Theorem
Suitable Grade Level
Grades 8-10
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