Concept explainers
a)
To graph: Trapezoid ABCD and its image after a clockwise rotation of 180 degree about vertex D.
a)
Answer to Problem 8PPS
Vertices of imaged triangle A`B`C`D` are
Explanation of Solution
Given information: A triangle JKL with vertices
Formula/Concept used: In clockwise rotation by 180 degree about a fixed point, the coordinates of fixed points remains the same and other coordinate(s)
Calculation: Based on above rule, the coordinates of D will remain same and other vertices will be changed as:
Conclusion: Thus, the graphs of both the trapezoids are shown as under:
b)
To give: The vertices of imaged trapezoid A`B`C`D`.
b)
Answer to Problem 8PPS
Vertices of imaged triangle A`B`C`D` are:
Explanation of Solution
Given information: A triangle JKL with vertices
Formula/Concept used: In clockwise rotation by 180 degree about a fixed point, the coordinates of fixed points remains the same and other coordinate(s)
Calculation: Based on above rule, the coordinates of D will remain same and other vertices will be changed as:
A`(3,-1),B`(3,-4),C`(-1,-4),D`(-1,1)
Conclusion: Thus, Vertices of imaged triangle A`B`C`D` are
Chapter 11 Solutions
Pre-Algebra, Student Edition
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