ISEE Lower Level Mathematics Achievement · Question of the Day

ISEE Lower Level Mathematics Achievement Question of the Day

A fresh daily question to build accuracy, reinforce recall, and turn practice into a steady habit.

Sunday, September 6, 2026

Three vertices of a square are at the points (2, 1), (5, 1), and (5, 4). What are the coordinates of the fourth vertex?

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Question of the Day

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Three vertices of a square are at the points (2, 1), (5, 1), and (5, 4). What are the coordinates of the fourth vertex?

(2, -2)
(2, 4) (correct answer)
(4, 2)
(8, 4)

Explanation: The vertices (2, 1) and (5, 1) form a horizontal side of length 3. The vertices (5, 1) and (5, 4) form a vertical side of length 3. To complete the square, the fourth vertex must have the x-coordinate of (2, 1) and the y-coordinate of (5, 4). Therefore, the fourth vertex is at (2, 4).