4th Grade Shapes
Presentation
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Mathematics
•
3rd - 5th Grade
•
Medium
+1
Standards-aligned
Deanndra McDonald
Used 183+ 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.
4
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?
24
Multiple Select
How would you classify this triangle using its sides and angles?
Classifying Shapes
Polygons and Triangles
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