To find the length of the vertical sides of the quadrilateral given the points (7,−3), (7,−8), (11,−4), and (11,−9), we will look for the vertical distances between points that share the same x-coordinate.
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For the points (7, -3) and (7, -8):
- The vertical distance is calculated as: \[ |y_1 - y_2| = |-3 - (-8)| = |-3 + 8| = |5| = 5 \text{ cm} \]
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For the points (11, -4) and (11, -9):
- The vertical distance is calculated as: \[ |y_1 - y_2| = |-4 - (-9)| = |-4 + 9| = |5| = 5 \text{ cm} \]
Thus, the lengths of the vertical sides of the quadrilateral are both 5 cm.