Fun with Shapes

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A rectangle is a shape with 4 sides and 4 corners. It has opposite sides that are equal in length. All corners of a rectangle are square corners (right angles).

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All corners of a rectangle are square corners (right angles). This means each corner is exactly the same and forms a perfect 90-degree angle.

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A square is a special type of rectangle where ALL four sides are equal in length. Like rectangles, squares have 4 sides, 4 corners, and all corners are square corners.

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A triangle has 3 sides and 3 corners. Triangles are the simplest polygon (closed shape) we can make with straight lines.

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A circle is made of one curved line with no sides and no corners. It is perfectly round and every point on the circle is the same distance from the center.

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Examples include: book, door, blackboard, mobile phone, table top, window, picture frame, or any box-shaped object.

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When you unfold a cardboard box, you can see rectangles and squares. Most boxes unfold to show 6 rectangular faces - some may be squares if it's a cube.

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You can check by using the corner of a square piece of paper or by using two paper strips joined together. Place it against the corner - if it fits perfectly, it's a square corner.