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Mathematics, Grade 3
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Study Guide Shapes Mathematics, Grade 3
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SHAPES What Are Shapes? We are surrounded by many different kinds of shapes every day. Many shapes are flat. These shapes are two-dimensional plane figures. Plane Figures Plane figures are flat. They can be closed or not closed. Polygons are plane figures made up of three or more closed line segments. Each line segment of a polygon is a side. Polygons are classified by the number of sides. © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.
A triangle has three sides. An equilateral triangle has three sides of equal length. An isosceles triangle has only two sides of equal length. A right triangle has one right angle. © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.
• A quadrilateral has four sides. o A parallelogram has two pairs of opposite parallel sides. The sides in each pair are equal in length. o A rectangle is a special kind of parallelogram. It has four right angles. o A square is a special kind of rectangle. All four sides of a square are equal in length. All four angles are right angles. o A rhombus is a parallelogram with four equal sides. • A pentagon has five sides. • A hexagon has six sides. • An octagon has eight sides. Try This! Name the shape. This shape has 4 equal sides and 4 right angles. __________________ This shape has 4 equal sides. __________________ © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.
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