5th Grade Math
Geometry and the Coordinate Plane
Unit 7
Geometry and the Coordinate Plane
Here's a warm-up: using the online coordinate grid below, plot these points in order: (2, 2) (2, 4) (2, 6) (2, 8) (4, 5) (6, 8) (6, 6) (6, 4) and (6, 2). What letter is formed on the grid? (That's right! If you could connect the points, the letter M is formed. Check to see if you get the letter M too).
Use this online coordinate graph to plot points and see where they go on a coordinate plane! It is a lot of fun to play around with!
Graph Points on the Coordinate Plane
What is the coordinate plane? The coordinate plane is made up of a pair of perpendicular number lines, called axes. The axes intersect at the 0 on each line, also called the origin. A point in the plane located by using an ordered pair of numbers, called its coordinates. Coordinates are placed within parentheses and separated by a comma like this: (7,3).
The first number indicates how far to travel from the origin in the direction of the x axis (so left or right), and the second number indicates how far to travel in the direction of the y-axis (so up and down).
Here's another exercise:
Plot these points on a coordinate grid.
• Point A: (2,6)
• Point B: (4,6)
• Point C: (6,3)
• Point D: (2,3)
Connect the points in order. Make sure to connect Point D back to Point A.
1. What geometric figure is formed? What attributes did you use to identify it?
Trapezoid
2. What line segments in this figure are parallel?
Line segments AB and DC are parallel
3. What line segments in this figure are perpendicular?
Segments AD and DC are perpendicular
You try! Using the coordinate grid above which ordered pair represents the location of the school? Explain a possible path from the school to the library
The School is at (7,4). From the School to the Library, you can walk left 2 and up 3! Did you get it? Great job!
Try these games for more practice with the coordinate plane!
Ready to practice? Play this game to determine how far a point is from the x- and y-axis!