Introduction to Geometry| Identify common and regular polygons | CCSS.MATH.CONTENT.4.G.A.1Draw points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines. Identify these in two-dimensional figures. | Introduction to Geometry Lesson Plans | Regular Polygon
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Name: Square Sides: 4 sides (quadrilateral); equal length Angles: 4 right angles Special: 2 pairs of parallel sides
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Name: Rectangle Sides: 4 sides (quadrilateral) Angles: 4 right angles Special: 2 pairs of parallel sides
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Name: Acute Isosceles Triangle Sides: 3 sides (triangle) Angles: 3 angles, each less than 90 degrees Special: 2 sides have equal length
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Name: Regular Octagon Sides: 8 sides of equal length Angles: 8 congruent angles Special: 4 pairs of parallel sides
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Name: Regular Pentagon Sides: 5 sides of equal length Angles: 5 congruent angles Special: No parallel sides
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Name: Obtuse Scalene Triangle Sides: 3 sides (triangle) Angles: 1 obtuse and 2 acute angles Special: All sides have different lengths