If the trapezoid below is reflected across the x-axis, what are the coordinates of B?
Added by George G.
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When we reflect a point across the x-axis, the x-coordinate stays the same, but the y-coordinate changes sign. Show more…
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Suppose the triangle in the figure below is reflected in the x-axis. Given the points A(4,2) B(1,5) C(3,7) A(4,2) B(1,5) C(3,7) What are the coordinates of the image triangle. A'( B'( C'(
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(a) Draw the trapezoid $A B C D$ with vertices $A(0,0)$ $B(7,0), C(6,4),$ and $D(4,4)$ (b) Compute the area of the trapezoid. (See the inside front cover of this book for the appropriate formula.)
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