4th Grade Shapes
Presentation
•
Mathematics
•
3rd - 5th Grade
•
Medium
+1
Standards-aligned
Deanndra McDonald
Used 186+ times
FREE Resource
12 Slides • 12 Questions
1
Classifying Shapes
Polygons and Triangles
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Polygon
Closed plane figure.
Closed plane figure means that every side of the figure joins two other sides.
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Multiple Choice
Is this polygon a closed plane figure or an open plane figure?
5
Multiple Choice
How many sides does this polygon have?
6
Multiple Choice
How many vertices does this polygon have?
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Examples and non-examples of Polygons
A figure is NOT a polygon if it is NOT made up of line segments.
8
Multiple Select
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How to name polygons
Polygons can have any number of sides as long as they follow the rules of a polygon.
Once we get past 8 sides, we usually start saying how many sides the polygon has and "sided polygon" at the end.
Example: 13-sided polygon
10
Multiple Choice
Name this polygon
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Multiple Choice
Name this polygon
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Classifying Triangles
Triangles are classified by their sides and their angles
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Equilateral
An equilateral triangle has three equal sides.
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Isosceles Triangle
An isosceles triangle has two equal sides.
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Scalene triangle
A scalene triangle has zero equal sides.
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Multiple Choice
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Multiple Choice
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Multiple Choice
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Right triangle
A right triangle has a right angle.
A right angle is 90 degrees.
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Acute triangle
An acute triangle has three acute angles.
An acute angle is less than 90 degrees.
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Obtuse triangle
An obtuse triangle has one obtuse angle.
An obtuse angle is bigger than 90 degrees.
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Multiple Select
How would you classify this triangle using its sides and angles?
23
Multiple Select
How would you classify this triangle using its sides and angles?
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Multiple Select
How would you classify this triangle using its sides and angles?
Classifying Shapes
Polygons and Triangles
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