What is the surface area and volume of this shape?
2 answers:
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Answer: Reflection about x-axis
Step-by-step explanation:
Given
Initially, vertices are
After reflection they become
It is clear that the x coordinate remains unchanged and the y coordinate changes its sign. It occurs when reflection is done about the x-axis.
For example, when (a,b) is reflected about the x-axis, it becomes (a,-b).
So, here reflection is being done about the x-axis.
