2nd Grade Vocabulary for 2-Dimensional Shapes
Polygon: Made up of straight line segments called sides. Every side meets exactly one other
side at a corner or angle, so a polygon is a closed figure.
A polygon always has the same
number of angles as sides.
Polygons are named based on common attributes.
Triangle: A three-sided polygon with three
angles.
Quadrilateral: A four-sided polygon with four
angles.
Pentagon: A five-sided polygon with five
angles.
Hexagon: A six-sided polygon with six angles.
Examples of Different Types of Quadrilaterals
Trapezoid: A quadrilateral which has at least one pair of parallel sides.
Parallelogram: A quadrilateral which has two pairs of parallel sides.
Rhombus: A parallelogram with sides that are
all the same length.
Rectangle: A parallelogram with four square
corners.
Square: A special rectangle with sides that are all the same length.
NYS COMMON CORE MATHEMATICS CURRICULUM
Lesson 2 Application Template 2•8
NYS COMMON CORE MATHEMATICS CURRICULUM
Lesson 2 Application Template 2•8
Lesson 4 Template 2•8
NYS COMMON CORE MATHEMATICS CURRICULUM
Copy onto heavy tag board and cut.
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NYS COMMON CORE MATHEMATICS CURRICULUM
Cut out the tangram into 7 puzzle pieces.
Lesson 6 Homework 2•8
NYS COMMON CORE MATHEMATICS CURRICULUM
Lesson 9 Template 2•8
Lesson 9 Template 2•8
NYS COMMON CORE MATHEMATICS CURRICULUM
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NYS COMMON CORE MATHEMATICS CURRICULUM
Lesson 10 Template 2•8
Lesson 11 Template 2•8
NYS COMMON CORE MATHEMATICS CURRICULUM
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NYS COMMON CORE MATHEMATICS CURRICULUM
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Lesson 11 Template 2•8
1 Fourth
1 Fourth
Lesson 11 Template 2•8
NYS COMMON CORE MATHEMATICS CURRICULUM
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NYS COMMON CORE MATHEMATICS CURRICULUM
Lesson 12 Problem Set Template 2•8
Lesson 13 Template 2•8
NYS COMMON CORE MATHEMATICS CURRICULUM
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