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Write Algebraic Expressions from DiagramsWrite Algebraic Expressions from Diagrams
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Question 1 of 3
1. Question
Write an expression for the perimeter of this square: (4L, 4l) `\text(cm)`
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Perimeter is the sum of the lengths of a shape.Based on the definition of perimeter, we simply add the lengths of the square.Perimeter `=` `L+L+L+L` `=` `4xxL` `=` `4L` cm `4L` cm 
Question 2 of 3
2. Question
Write an expression for the perimeter of this triangle: (2x+y)
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Perimeter is the sum of the lengths of a shape.Based on the definition of perimeter, we simply add the lengths of the triangle.Perimeter `=` `x+x+y` `=` `(2xxx)+y` `=` `2x+y` `2x+y` 
Question 3 of 3
3. Question
Write an expression for the perimeter of this trapezoid: (x+y+2z)
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Perimeter is the sum of the lengths of a shape.Based on the definition of perimeter, we simply add the lengths of the trapezoid.Perimeter `=` `x+y+z+z` `=` `x+y+(2xxz)` `=` `x+y+2z` `x+y+2z`
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