The formula to determine one exterior angle is 360°/n, where n is the total number of sides. The value of an exterior angle can be obtained by subtracting the interior angle from 180°. A right square prism is formed when the lateral faces are perpendicular to its base. The exterior angles of a polygon are formed with its one side and by extending its adjacent side at the vertex.
The exterior angle sum theorem states that an exterior angle of a triangle is equal to the sum of its remote interior angles. Surface area is measured in square units such as m2, cm2, mm 2, or in 2. The general formula to find the total surface area of a prism is: Total Surface Area (TSA) = 2 × Base Area + Base. To calculate the total surface area of a prism, find the area of the two end faces and work out the area of all rectangular faces in one of two ways: S = (2 × Base Area) + (Base perimeter × height).
The measure of an exterior angle is equal to the sum of the two internal opposite angles. In the given image, ‘a’ and ‘b’ are interior angles and ‘d’ is the height of the prism. The formula for finding the surface area of a prism is Surface area = 2B + Ph, where B is the area of a square base, P is the perimeter of the square base, and h is the height of the prism.
In summary, the exterior angle of a polygon is determined by the side and extension of its adjacent sides, adding up to 360°.
📹 How To Calculate The Interior Angles and Exterior Angles of a Regular Polygon
This geometry video tutorial explains how to calculate the interior angles and the exterior angles of a regular polygon. Examples …
📹 Finding the exterior angle of a quadrilateral
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