ISEE Lower Level Quantitative : Coordinate Geometry

Study concepts, example questions & explanations for ISEE Lower Level Quantitative

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Example Questions

Example Question #1 : How To Find A Rectangle On A Coordinate Plane

Rectangle \displaystyle ABCD has coordinate points: \displaystyle A(-5,0)\displaystyle B(-5,5)\displaystyle C(-1,5)\displaystyle D(-1,0). Find the perimeter of rectangle \displaystyle ABCD.

Possible Answers:

\displaystyle 18

\displaystyle 32 

\displaystyle 20

\displaystyle 16

Correct answer:

\displaystyle 18

Explanation:

In order to find the perimeter of a rectangle apply the formula:

\displaystyle p=2(width)+2(length)

Thus the solution is:
Looking at the coordinate points we found our width\displaystyle =4 and our length\displaystyle =5.

Plugging these values into the perimeter equation we get:

\displaystyle p=2(4)+2(5)
\displaystyle p=8+10=18

Example Question #1 : How To Find A Rectangle On A Coordinate Plane

Rectangle \displaystyle ABCD has coordinate points: \displaystyle A(-2,2)\displaystyle B(-2,4)\displaystyle C(2,4)\displaystyle D(2,2). Find the perimeter of rectangle \displaystyle ABCD

Possible Answers:

\displaystyle 12

\displaystyle 8

\displaystyle 15

\displaystyle 10

\displaystyle 16

Correct answer:

\displaystyle 12

Explanation:

In order to find the perimeter of rectangle apply the formula: \displaystyle p=2(width) + 2(length)

To find the length and width of the rectangle look at the difference in the x values and look for the difference in the y values of the coordinates.

\displaystyle A(-2,2), B(-2,4) \rightarrow 4-2=2

\displaystyle B(-2,4), C(2,4) \rightarrow 2-(-2)=4


Since, the width of rectangle \displaystyle ABCD is \displaystyle 4 and the length is \displaystyle 2 the solution is:

\displaystyle p=2(4)+2(2)=8+4=12

Example Question #1 : How To Find A Rectangle On A Coordinate Plane

Select the graph that displays the polygon created using the following coordinates:

\displaystyle (5,-9)

\displaystyle (5,-3)

\displaystyle (-6,-9)

\displaystyle (-6,-3)

Possible Answers:

 

Plot 4

 

Plot 1

 

Plot 2

 

Plot 3

Correct answer:

 

Plot 1

Explanation:

When we are given coordinate points, it's important to know the difference between the x-axis and the y-axis, and which order these points are given. The x-axis is the axis that runs left to right and the y-axis is the axis the runs up and down. When coordinate points are written, the x value goes first, followed by the y value \displaystyle (x,y).

Knowing this information, we can plot the points and use straight lines to connect them in a counter-clockwise or clockwise direction. The provided coordinate points should create the following graph:

 

Plot 1

Example Question #1 : How To Find A Rectangle On A Coordinate Plane

Select the graph that displays the polygon created using the following coordinates:

\displaystyle (2,11)

\displaystyle (2,5)

\displaystyle (-2,11)

\displaystyle (-2,5)

Possible Answers:

 

Plot 5

 

Plot 8

 

Plot 7

 

Plot 6

Correct answer:

 

Plot 5

Explanation:

When we are given coordinate points, it's important to know the difference between the x-axis and the y-axis, and which order these points are given. The x-axis is the axis that runs left to right and the y-axis is the axis the runs up and down. When coordinate points are written, the x value goes first, followed by the y value \displaystyle (x,y).

Knowing this information, we can plot the points and use straight lines to connect them in a counter-clockwise or clockwise direction. The provided coordinate points should create the following graph:

 

Plot 5

Example Question #3 : How To Find A Rectangle On A Coordinate Plane

Select the graph that displays the polygon created using the following coordinates:

\displaystyle (-7,-6)

\displaystyle (-7,-1)

\displaystyle (8,-6)

\displaystyle (8,-1)

Possible Answers:

 

Plot 9

 

Plot 10

 

Plot 12

 

Plot 11

Correct answer:

 

Plot 9

Explanation:

When we are given coordinate points, it's important to know the difference between the x-axis and the y-axis, and which order these points are given. The x-axis is the axis that runs left to right and the y-axis is the axis the runs up and down. When coordinate points are written, the x value goes first, followed by the y value \displaystyle (x,y).

Knowing this information, we can plot the points and use straight lines to connect them in a counter-clockwise or clockwise direction. The provided coordinate points should create the following graph:

 

Plot 9

Example Question #1 : How To Find A Rectangle On A Coordinate Plane

Select the graph that displays the polygon created using the following coordinates:

\displaystyle (14,9)

\displaystyle (14,-7)

\displaystyle (-4,9)

\displaystyle (-4,-7)

Possible Answers:

 

Plot 14

 

Plot 13

 

Plot 15

 

Plot 16

Correct answer:

 

Plot 13

Explanation:

When we are given coordinate points, it's important to know the difference between the x-axis and the y-axis, and which order these points are given. The x-axis is the axis that runs left to right and the y-axis is the axis the runs up and down. When coordinate points are written, the x value goes first, followed by the y value \displaystyle (x,y).

Knowing this information, we can plot the points and use straight lines to connect them in a counter-clockwise or clockwise direction. The provided coordinate points should create the following graph:

 

Plot 13

Example Question #1 : Draw Polygons In The Coordinate Plane And Solve For Side Lengths: Ccss.Math.Content.6.G.A.3

Select the graph that displays the polygon created using the following coordinates:

\displaystyle (-10,4)

\displaystyle (-10,8)

\displaystyle (-2,4)

\displaystyle (-2,8)

Possible Answers:

 

Plot 19

 

Plot 20

 

Plot 18

 

Plot 17

Correct answer:

 

Plot 17

Explanation:

When we are given coordinate points, it's important to know the difference between the x-axis and the y-axis, and which order these points are given. The x-axis is the axis that runs left to right and the y-axis is the axis the runs up and down. When coordinate points are written, the x value goes first, followed by the y value \displaystyle (x,y).

Knowing this information, we can plot the points and use straight lines to connect them in a counter-clockwise or clockwise direction. The provided coordinate points should create the following graph:

 

Plot 17

Example Question #2 : Draw Polygons In The Coordinate Plane And Solve For Side Lengths: Ccss.Math.Content.6.G.A.3

Select the graph that displays the polygon created using the following coordinates:

\displaystyle (-7,-13)

\displaystyle (-7,0)

\displaystyle (9,-13)

\displaystyle (9,0)

Possible Answers:

 

Plot 23

 

Plot 22

 

Plot 24

 

Plot 21

Correct answer:

 

Plot 21

Explanation:

When we are given coordinate points, it's important to know the difference between the x-axis and the y-axis, and which order these points are given. The x-axis is the axis that runs left to right and the y-axis is the axis the runs up and down. When coordinate points are written, the x value goes first, followed by the y value \displaystyle (x,y).

Knowing this information, we can plot the points and use straight lines to connect them in a counter-clockwise or clockwise direction. The provided coordinate points should create the following graph:

 

Plot 21

Example Question #11 : How To Find A Rectangle On A Coordinate Plane

Select the graph that displays the polygon created using the following coordinates:

\displaystyle (-13,-4)

\displaystyle (-13,-2)

\displaystyle (-15,-4)

\displaystyle (-15,-2)

Possible Answers:

 

Plot 26

 

Plot 25

 

Plot 28

 

Plot 27

Correct answer:

 

Plot 25

Explanation:

When we are given coordinate points, it's important to know the difference between the x-axis and the y-axis, and which order these points are given. The x-axis is the axis that runs left to right and the y-axis is the axis the runs up and down. When coordinate points are written, the x value goes first, followed by the y value \displaystyle (x,y).

Knowing this information, we can plot the points and use straight lines to connect them in a counter-clockwise or clockwise direction. The provided coordinate points should create the following graph:

 

Plot 25

Example Question #12 : How To Find A Rectangle On A Coordinate Plane

Select the graph that displays the polygon created using the following coordinates:

\displaystyle (14,14)

\displaystyle (14,-7)

\displaystyle (9,14)

\displaystyle (9,-7)

Possible Answers:

 

Plot 31

 

Plot 30

 

Plot 29

 

Plot 32

Correct answer:

 

Plot 29

Explanation:

When we are given coordinate points, it's important to know the difference between the x-axis and the y-axis, and which order these points are given. The x-axis is the axis that runs left to right and the y-axis is the axis the runs up and down. When coordinate points are written, the x value goes first, followed by the y value \displaystyle (x,y).

Knowing this information, we can plot the points and use straight lines to connect them in a counter-clockwise or clockwise direction. The provided coordinate points should create the following graph:

 

Plot 29

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