Curriculum placement
Grade 6. This describes the skill, not a learner estimate.
Side lengths from coordinates
Find polygon side lengths from coordinates
Problem types
- Side lengths from coordinates
- Rectangle perimeter and area from coordinates
- Plot a rectangle from its vertices
- Plot the missing vertex of a rectangle
Builds on
- Coordinates in four quadrants
- Area of a rectangle · Useful idea
The area of a rectangle drawn on a grid is its width times its height, read from the coordinates of the vertices.
Leads to
- Distance in the coordinate plane · Extend the idea
Horizontal and vertical side lengths are found by counting units, and slanted sides use the Pythagorean theorem.
- Perimeter and area from coordinates · Extend the idea
Side lengths found from coordinates extend to the perimeter and area of any polygon given by its vertices.
- Proofs that use coordinates · See it applied
Side lengths and vertices of a polygon on a grid are used to prove claims about its shape.
Related skills
- Translations, reflections, and rotations · Shared foundations
- Scatter plots and trend lines · Shared foundations
- Slope of a line · Shared foundations
Open the interactive map to explore lessons and skill connections.