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Lisa is making a quilt that uses a pattern of triangles like the one shown. Write an equation that represents the missing side length if the perimeter is 19 centimeters, 3 cm pls help .​

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raphealnwobi

The length of the missing side of the triangle is 6 cm.

Triangle

A triangle is a polygon with three sides and three angles. Types of triangles are isosceles, equilateral, obtuse and scalene triangle.

The perimeter of a triangle is the sum of all the sides of the triangle. Let x represent the missing length. Also, let the other sides be 3 cm and 10 m.

Hence:

Perimeter = x + 3 + 10

19 = x + 13

x = 6 cm

The length of the missing side of the triangle is 6 cm.

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