How to find a square on a coordinate plane - ISEE Lower Level (grades 5-6) Mathematics Achievement

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Question

A shape with points , ,, and is plotted on a coordinate plane. What shape is it?

Answer

Since each side is equal to each other, the shape must be a square.

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Question

A square is plotted on a coordinate plane. It includes the following points: What is the remaining point?

Answer

Each of the points is written as an ordered pair. The first number in each ordered pair shows where the point is located on the x-axis. The second number in each ordered pair shows where the point is located on the y-axis. If you plot the ordered pairs listed in the problem, the ordered pair that is needed to complete the points of a square is .

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Question

A square is plotted on a coordinate plane. It includes the following points: . What is the remaining point?

Answer

Each of the points is written as an ordered pair. The first number in each ordered pair shows where the point is located on the x-axis. The second number in each ordered pair shows where the point is located on the y-axis. If you plot the ordered pairs listed in the problem, the ordered pair that is needed to complete the points of a square is .

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Question

A coordinate plane is shown.

Blank_grid

Ralph plotted the following points on the coordinate grid:

Point W (3, 3); Point X (3, 8); Point Y (8, 3); Point Z (8, 8)

A polygon is formed with vertices W, X, Y, and Z. Which type of polygon is formed?

Answer

Start by plotting and connecting the vertices to create a quadrilateral.

Screenshot_2015-03-24_at_5.39.24_pm

The figure that is created has 4 right angles and sides of equal length. The only answer choice that shares these characteristics is the square.

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Question

A coordinate plane is shown.

Blank_grid

Ralph plotted the following points on the coordinate grid:

Point W (5, 5); Point X (0, 5); Point Y (0, 0); Point Z (5, 0)

A polygon is formed with vertices W, X, Y, and Z. Which type of polygon is formed?

Answer

Start by plotting and connecting the vertices to create a quadrilateral.

Screenshot_2015-03-24_at_5.45.58_pm

The figure that is created has 4 right angles and sides of equal length. The only answer choice that shares these characteristics is the square.

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Question

Grid1st4

Renee plotted the following points in quadrant one on the coordinate grid:

Point A = (2,2)

Point B = (7,2)

Point C= (7,7)

Where in Quadrant one of the coordinate grid would Renee have to plot Point D so that the points form a square with vertices A, B, C, and D, and forms sides AB, BC, CD, and DA?

Answer

Once Points A,B, and C have been plotted the missing coordinates in order to form a square (all sides being equal), Point D would be (2,7). All coordinates (x,y) in Quadrant one will be positive integers.

Another approach is to calculate the distance between each point.

When Point A and Point B are plotted they form a horizontal line that goes from 2 to 7. That makes the distance .

When Point B and Point C are plotted they form a vertical line that goes from 2 to 7. That makes the distance .

Point C creates a vertical line with Point B. That makes the distance .

From here, we want to find a point that is horizontally 5 units from Point C and vertically 5 units from Point A. Thus (2,7) is the correct answer.

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