Understanding Polygons and Triangles

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Polygon

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A polygon is a closed shape with straight sides. The sides meet at angles (corners). Examples include triangles, squares, and hexagons.

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Triangle

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A triangle has 3 sides and 3 angles (corners). There are different types of triangles, such as equilateral, isosceles, and scalene.

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Equilateral Triangle

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An equilateral triangle has 3 equal sides and 3 equal angles, each measuring 60 degrees.

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Isosceles Triangle

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An isosceles triangle has 2 equal sides and 2 equal angles.

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Scalene Triangle

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A scalene triangle has 3 sides of different lengths and 3 different angles.

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Quadrilateral

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A quadrilateral is a polygon with 4 sides and 4 angles. Examples include squares, rectangles, and trapezoids.

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Square

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A square is a quadrilateral with 4 equal sides and 4 right angles (90 degrees).

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Rectangle

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A rectangle is a quadrilateral with 4 right angles and opposite sides that are equal in length.

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Rhombus

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A rhombus is a quadrilateral with 4 equal sides. The opposite angles are equal, but the angles are not 90 degrees like a square.

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Parallelogram

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A parallelogram is a quadrilateral with opposite sides that are parallel and equal in length. Opposite angles are also equal.