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Does the icosahedron have any parallel edges?
Formula for even sided shapes: Number of sides divided by 2. 20 divided by two equals 10.
Area of a triangle with a area of 14m and a height of 12m?
The answer is 84 because you need to multiply the height and base which is 14 and 12 which equals 168. But because the triangle is halve of a square you need to divided the answer by 2 which is 168 divided by 2 equals 84.
What is the formula of the area of a triangle?
Area equals 1/2 of the base times the height.
If the horizontal change is 6 and the vertical change is 12 then what is the slope?
Slope is 'rise over run', that is rise divided by run. In this case, that's 12 divided by 6, which equals 2.
What will be the measure of an interior angle of a regular 18 sided polygon?
A regular 18-sided polygon, an octadecagon or octakaidecagon, will have interior angles that each measure 160 degrees. Use the link below to a presentation on all 'gons. It's short, cool and really easy to understand. By the way, the formula for the sum of all the interior angles of any convex polygon is (N-2) x 180 degrees, where N = the number of sides. In the 18-sided 'gon here, we plug in the 18 for the N and 18 - 2 = 16, and 16 x 180 = the sum of all the interior angles, and lastly ('cause you wondered where we were going with this), 16 x 180 divided by 18 (the 18 being the number of sides) = 16 x 10, and that equals 160 degrees. And that's where the 160 degrees above came from. Have you been convinced to use that link? Hope so!
