lesson
Computing Areas of Triangles Using Coordinates
Compute the area of right and non-right triangles on coordinate grids using base-height calculations and bounding boxes.
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This lesson is part of a track
Public learning track
Cartesian Coordinate Plane: Distances and Polygons
10 lessons
Goal
Plot points in all four quadrants, calculate horizontal and vertical segment lengths using absolute value, and construct polygons to determine coordinate perimeter and area.
10 lessons
0 of 10 done
- Plotting Points in All Four QuadrantsUp next
- Plotting Points with Rational Number CoordinatesNot started yet
- Using Absolute Value to Find Coordinate DistancesNot started yet
- Calculating Horizontal and Vertical Distances Between PointsNot started yet
- Drawing 2D Polygons from Coordinate Vertex ListsNot started yet
- Finding Side Lengths of Polygons from CoordinatesNot started yet
- Computing Areas of Rectangles Using CoordinatesNot started yet
- Computing Areas of Triangles Using CoordinatesYou are here
- Finding Missing Coordinates of Parallelograms and RhombusesNot started yet
- Calculating Areas of Irregular Polygons Using Box Subtraction MethodNot started yet
Learning standards covered
OGM.7.GEO.1Open Global Math Standards 2026™ · 6th GradeDerive and apply area formulas for triangles, special quadrilaterals (rectangles, parallelograms, rhombuses, trapezoids), and irregular polygons by composition into rectangles and decomposition into triangles; solve practical area and perimeter problems involving unit consistency.
OGM.7.GEO.5Open Global Math Standards 2026™ · 6th GradeLocate, plot, and find coordinates of points in all four quadrants of the Cartesian coordinate plane; calculate horizontal and vertical distances between points sharing a coordinate using absolute value; draw polygons from vertex coordinates and find perimeter/area.