Polygons Flashcards
What are the vertices in a polygon?
The points of intersection of the sides of the polygon.
What is a polygon?
A close plane figure formed by three or more line segments.
How is a polygon with three sides called?
A triangle.
What is the name of a polygon with four sides? Name some examples and their measures.
A polygon with four sides is known as a quadrilateral. A square is a quadrilateral in which al sides have the same measure. A rectangle has two sets of parallel lines with the same measure. A parallelogram has two parallel lines only.
What are the names of polygons with five sides or more?
Pentagon, with five sides; hexagon, with six sides; heptagon, with seven sides; octagon, with eight sides; nonagon, with nine sides; decagon, with ten sides; and dodecagon, with 12 sides.
What is the formula used to calculate the interior measure of a polygon?
(n-2)180•
How do you find the perimeter of a polygon?
By adding the length of its sides.