add all the sides up and im pretty sure if u only have 2 sides filled out then add those and subtract it by 180 and that's the last side
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By adding the three sides.
Add up the sides.
-- Measure or calculate the length of each of its 3 sides. -- Add the lengths of its 3 sides. -- The sum is the perimeter of the triangle.
The perimeter of a triangle is the sum of its 3 sides
the ratio of the perimeter of triangle ABC to the perimeter of triangle JKL is 2:1. what is the perimeter of triangle JKL?
ask your maths teacher
By adding the three sides.
-- Make sure you have the lengths of all three sides -- Add up the lengths of all three sides to get the perimeter of the triangle.
Add up the sides.
-- Measure or calculate the length of each of its 3 sides. -- Add the lengths of its 3 sides. -- The sum is the perimeter of the triangle.
The perimeter of a triangle is the sum of its three sides.
The perimeter of a triangle is the sum of its 3 sides
There is no reason for the perimeter of a triangle to have any relation to the perimeter of an unrelated rectangle!
The perimeter of a triangle is the sum of its 3 sides
The perimeter of a triangle is the sum of its 3 sides
Add up the length of all sides