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Geometry — shapes and perimeter

Classify polygons by sides, find right angles, identify lines of symmetry, and compute perimeters of squares, rectangles and triangles.

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Perimeter — square and rectangle

Compute the perimeter of a square or rectangle.

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Triangle perimeter

Compute the perimeter of a triangle.

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Classify polygons

Name shapes by their number of sides.

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Right angles

Count right angles in a shape.

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Line of symmetry

Find lines of symmetry in shapes.

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