If the parallelogram is sideways like the small sides are crooked and the bottom lines are straight then you have to add all the sides to get your answer.
Measure any two adjacent sides. Sum them, then multiply by two.
It's the sum of the lengths of all sides that form a parallelogram.
Perimeter is the distance around an object. If we have a parallelogram with a length 12 and width 5, then 5+5+12+12 which is equal to 34. Same with trapezoid, rectangle, triangle, star, etc.
P = 2l + 2w
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A parallelogram has 4 vertices, so clearly PQRST is a parallelogram with an additional vertex defined somewhere on its perimeter. However, there is no information on how or what has been done in the question and, as a result, the question cannot be answered.
The area of a Parallelogram is Base * Height The Perimeter is 2(side1 + side2)
12
I don't know about the relation in the perimeters of a triangle and a parallelogram but if a triangle is on the same base on which the parallelogram is and the triangle is between the same parallel lines of the parallelogram, then the area of the triangle will be half the area of the parallelogram. That is, area of a triangle = 1/2 area of a parallelogram if the triangle is on the same base and between the same parallel lines.
If you know the perimeter, there is no need to find it again.