What is the formula to calculate the perimeter of triangle LMN and how do you apply it?

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The perimeter of a triangle is simply the sum of the lengths of all its sides. For triangle LMN, you would need to know the lengths of sides LM, LN, and MN.

To calculate the perimeter, you can use the following formula:

Perimeter (P) = LM + LN + MN

Here’s a step-by-step guide on how to apply this formula:

  1. Measure the lengths of each side: Use a ruler or measuring tape to determine the lengths of sides LM, LN, and MN.
  2. Add the lengths together: After measuring, simply add the three lengths to get the perimeter. For example, if LM = 5 cm, LN = 7 cm, and MN = 9 cm, then:

P = 5 cm + 7 cm + 9 cm = 21 cm

So, the perimeter of triangle LMN would be 21 cm.

Remember, the units of measurement are crucial! Ensure all sides are measured in the same unit (e.g., cm, meters) to get an accurate perimeter.

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