Perimeter of Basic Shapes
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Question 1 of 4
1. Question
Find the perimeter of this rectangle.
- (26)cm
Hint
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Great Work!
Incorrect
The Perimeter of a shape is the sum of all the side lengths.First, find the missing lengths.Remember that opposite sides in a rectangle are equal.
Now that we know all the side lengths, add them all to find the perimeter.Perimeter `=` `8+8+5+5` `=` `16+10` `=` `26` cm `26` cm -
Question 2 of 4
2. Question
Find the perimeter of this triangle.
- (37)cm
Hint
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Awesome!
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The Perimeter of a shape is the sum of all the side lengths.Since the side lengths are already given, add them all to find the perimeter.Perimeter `=` `13+9+15` `=` `22+15` `=` `37` cm `37` cm -
Question 3 of 4
3. Question
Find the perimeter of this triangle.
- (57)mm
Hint
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Good job!
Incorrect
The Perimeter of a shape is the sum of all the side lengths.First, find the missing length.The line markers indicate equal sides.
Now that we know all the side lengths, add them all to find the perimeter.Perimeter `=` `16+16+25` `=` `57` mm `57` mm -
Question 4 of 4
4. Question
Find the perimeter of this triangle.
- (33)cm
Hint
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Fantastic!
Incorrect
The Perimeter of a shape is the sum of all the side lengths.First, find the missing length.The line markers indicate equal sides.
Now that we know all the side lengths, add them all to find the perimeter.Perimeter `=` `12+12+9` `=` `33` cm `33` cm