SHAPES & PROPERTIES

Identify and describe 2D and 3D shapes by their sides, vertices, and faces.

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CS.GO.1.1·Recognizing plane geometric shapes(I)CS.GO.2.1·Describing plane geometric shapes(II)

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2D SHAPES

Two-dimensional (2D) shapes are flat and have length and width. Key properties to learn: number of sides, number of vertices (corners), and types of angles. Common shapes include triangles (3 sides), quadrilaterals (4 sides), pentagons (5 sides), and hexagons (6 sides).