polygons must be closed and two lines cannot form a closed shape. There is not such thing as a two sided polygon.
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A rectangle.
1). Measure the length of each side. 2). Add up all the individual lengths. Their sum is the perimeter of the polygon.
Coordinates: R is (-6, 2) and T is (1, 2) Length of side RT is 7 units using the distance formula
A prism has 2n vertices, where n is the number of sides in its base polygon. This is because each side of the base polygon is connected to another side by a vertical edge, and each vertex is formed at the intersection of two edges. So, a prism with a pentagonal base would have 10 vertices (5 vertices from the base polygon and 5 vertices from the top polygon).
Polygon