The problem asks to find the endpoints of the midsegment of trapezoid $ABCD$, where $AD$ is parallel to $BC$. We are asked to enter the coordinates in ascending order.

GeometryTrapezoidMidsegmentCoordinate GeometryMidpoint Formula
2025/3/13

1. Problem Description

The problem asks to find the endpoints of the midsegment of trapezoid ABCDABCD, where ADAD is parallel to BCBC. We are asked to enter the coordinates in ascending order.

2. Solution Steps

The midsegment of a trapezoid connects the midpoints of the two non-parallel sides. In this case, the non-parallel sides are ABAB and CDCD. Let's first find the coordinates of the vertices AA, BB, CC, and DD from the graph.
A=(3,4)A = (3, 4)
B=(1,2)B = (-1, 2)
C=(0,1)C = (0, -1)
D=(4,1)D = (4, 1)
To find the midpoint of ABAB, we use the midpoint formula:
MAB=(xA+xB2,yA+yB2)M_{AB} = (\frac{x_A + x_B}{2}, \frac{y_A + y_B}{2})
MAB=(3+(1)2,4+22)=(22,62)=(1,3)M_{AB} = (\frac{3 + (-1)}{2}, \frac{4 + 2}{2}) = (\frac{2}{2}, \frac{6}{2}) = (1, 3)
To find the midpoint of CDCD, we use the midpoint formula:
MCD=(xC+xD2,yC+yD2)M_{CD} = (\frac{x_C + x_D}{2}, \frac{y_C + y_D}{2})
MCD=(0+42,1+12)=(42,02)=(2,0)M_{CD} = (\frac{0 + 4}{2}, \frac{-1 + 1}{2}) = (\frac{4}{2}, \frac{0}{2}) = (2, 0)
The endpoints of the midsegment are (1,3)(1, 3) and (2,0)(2, 0). We need to write the coordinates in ascending order. Ascending order means smallest to largest. Comparing the x-coordinates first, we have 1<21 < 2, so (1,3)(1, 3) comes before (2,0)(2, 0). However, if we are ordering the coordinates of each point, the question may be ordering the coordinates for *each* point, in which case we should list the x coordinate before the y coordinate in each point. The problem specifies that the coordinates are to be entered in ascending order, and refers to "the coordinates" suggesting this refers to the y-values 0 and

3. Given the possible ambiguity, let's list both midpoints.

3. Final Answer

(1, 3) and (2, 0)

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