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Geometry – Grade 5 2-D Shapes

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**Vocabulary You Need to Know!**

Point An exact, specific position Line Extends to infinity in both directions from a specific point Line Segment A line that begins at one specific point and ends at another specific point

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**Vocabulary You Need to Know!**

Angle The figure formed when two lines intersect at a point Acute Angle An angle whose measure is less than 90 degrees Obtuse Angle An angle whose measure is more than 90 degrees

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**Plane Figure Polygon Triangle Vocabulary You Need to Know!**

A flat, 2-D figure – it has no depth. The point where 2 sides intersect is call the vertex (vertices) Polygon A closed figure made of line segments Triangle A three sided polygon

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**Equilateral Isoscolese Scalene Right Triangles!**

A triangle with three equal sides Isoscolese A triangle with two equal sides Scalene A triangle with three different side lengths Right A triangle with a right angle

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**A quadrilateral whose sides and angles are different**

A polygon with 4 sides Regular A quadrilateral whose sides are the same length and the angles are the same Irregular A quadrilateral whose sides and angles are different

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**Quadrilaterals! Trapezoid Parallelogram Rhombus**

A quadrilateral with exactly one pair of parallel sides Parallelogram A quadrilateral with two pair of parallel sides Rhombus A quadrilateral with 4 equal sides

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**A quadrilateral with 2 sets of parallel sides and 4 equal angles**

Quadrilaterals! Rectangle A quadrilateral with 2 sets of parallel sides and 4 equal angles Square A quadrilateral with 2 sets of parallel sides of equal length and 4 equal angles

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