Point A and Point D have the same second coordinate, and ABCD is a quadrilateral. Line segment AD is 3 cm in length. What coordinates does Point D need to be plotted at to make this statement true?
If Point A has coordinates (x1, y) and Point D has coordinates (x2, y), where y is the common second coordinate, we know that the length of segment AD is 3 cm.
Using the distance formula, we can calculate the distance between points A and D:
√((x2 - x1)^2 + (y - y)^2) = 3
Since y - y = 0, the equation simplifies to:
√((x2 - x1)^2 ) = 3
(x2 - x1)^2 = 9
Therefore, we need to find points D with coordinates such that the x-coordinate is 3 units away from the x-coordinate of point A.