Cartesian Gri

Diagram Coordinates to Area (Right Triangle) - Positive Only (Level 2)

This math topic focuses on finding the area of right triangles when given coordinates on a Cartesian grid. It is exclusively concerned with positive coordinates, helping learners enhance their understanding of triangulation within the first quadrant. This subject is part of a larger module dedicated to triangle area calculations. Each question requires calculating triangle areas using vertex coordinates provided in a diagram, testing both geometric visualization and analytical skills in a single coordinate plane setup.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

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Diagram Coordinates to Area (Right Triangle) - Positive Only

Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.

Find the area of the triangle formed by these coordinates

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Teaching Transcript

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Find the area of the shape on the Cartesian grid from its coordinates

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To find the width, we notice that the X coordinates go from negative 2 to 3

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So that's a width of 5

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And for the height, the Y coordinates go from negative 4 to 3

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So that's a height of 7

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Our shape is a rectangle, so the area is width times height, which is 35. This approach works for any shape as you can find the dimensions from the grid.