Angle, The amount of turn between two lines., Degree (°), The unit used to measure angles., Protractor, A tool used to measure and draw angles., Acute Angle, An angle smaller than 90°., Right Angle, An angle exactly equal to 90°., Obtuse Angle, An angle greater than 90° but less than 180°., Straight Angle, An angle equal to 180°., Reflex Angle, An angle greater than 180° but less than 360°., Rotation, A turn around a point., Net, A flat pattern that can be folded to make a 3D object., Three-Dimensional (3D) Object, A shape that has length, width and height., Two-Dimensional (2D) Shape, A flat shape with length and width only., Prism, A 3D object with two matching ends and flat faces., Pyramid, A 3D object with a base and triangular faces that meet at a point., Face, A flat surface on a 3D object., Edge, The line where two faces meet., Vertex, The corner where edges meet., Spatial Reasoning, Thinking about shapes, objects and how they fit together.

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