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copyright@Ed2netLearning,Inc 1
SHAPES AND PATTERNS
GRADE 3
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Hello, How are you doing?Today, we are going to start a new lesson on
Shapes and patterns.
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2- Dimensional FigureA figure that has only length and width is
defined as 2-dimensional figure.
Example – Square, rectangle
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2-Dimensional FiguresDifferent 2 – Dimensional Figures are – Square Rectangle Triangles Circles
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Open and Closed FigureOpen Figure – A figure
have ends that do not meet.
Closed Figure – A figure have begins and ends that meet.
Open figure
Closed figure
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PolygonsPolygons are closed figures with straights
sides.
Different Polygons are – Pentagon Hexagon Octagon
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PentagonA Pentagon is a polygon that has 5 sides
and 5 angles.
side
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Hexagon and OctagonHexagon - A hexagon
has 6 sides and 6 angles.
Octagon – An octagon has 8 sides and 8 angles.
Hexagon
Octagon
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2- dimensional figuresSquare – A four sided
figure with all equal sides and 4 angles.
Rectangle – A four sided figure with opposite sides equal and 4 angles.
Square
Rectangle
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Triangle – A three sided figure with 3 angles is called a triangle.
Circle – A 2-dimensional figure that has no side.
Triangle
Circle
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Which is the 2-dimensional figure?
Answer- B and C
A B C
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Name the following a) A polygon with 3 sides.b) A polygon with 5 sides.
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What is the name given to the following shapes?
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Name the 2-dimensional figures in the following map.
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ASSESSMENT
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1. Name the following figures.a) 3 sided figure with 3 anglesb) 6 sided figure
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2. Name the figures in green and yellow color.
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3. Choose the open figure.
A B C D
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4. How many equal rectangles are there in the given figure?
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5. What is the shape of sun?
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6. What shapes can be seen in the flag of Guinea?
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7. Complete the following table.
Figure Number of sides
Triangle
Rectangle
Square
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8. Which of the following 2-dimensional figure has all
equal sides?
a) Rectangleb) Squarec) polygon
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9. How many triangles are shown in the figure given below?
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10. Name all the 2-dimensional figures in the figure shown below.
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Recap 2 – dimensional figures Open and Closed figure Polygons Square and rectangle Triangle and circle Solved Examples Practice Problems
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Good Work!Now practice the worksheets on the lesson.
