Math Lessons→Grade 3→Geometry
Grade 3 · Geometry

Geometry Lessons for Grade 3

Classify quadrilaterals and polygons by their attributes, connect area with multiplication, compare perimeter, and partition shapes into equal fractional regions. These lessons give each idea room for an interactive diagram, worked examples, and hands-on exploration.

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Scalene Triangle

A scalene triangle has three sides of different lengths.

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Isosceles Triangle

An isosceles triangle has at least two equal sides.

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Equilateral Triangle

An equilateral triangle has three equal sides and three equal angles.

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