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Interior angle of and 18 sided shape?
Exterior angle + interior angle = 180 Hence Interior Angle = 180 - Exterior Angle The Exterior Angle = n(No. of sides ) / 360 Substituting Interior Angle = 180 - (n/360) Interior Angle = 180 - (18/360) Interior Angle = 180 - (1/20) Interior Angle = 179.95 degrees.
What is the size of the exterior angle of a 20 sided polygon?
The question can be answered only if the 20-gon is regular - ie all its angles are the same. IF that is the case, then: The sum of the exterior angles of any polygon is 360 degrees. Since there are 20 exterior angles, each of them must be 360/20 = 18 degrees.
What is the measure of a vertex angle of an isosceles triangle if the measure of an exterior at the base is 100 degrees?
20 degrees and the two equal angles will be 80 degrees each
What type of triangle has an angle that measures 20 degrees and and angle that measures 90 degrees?
Any triangle that has an angle measuring 90 degrees is a right triangle.
What is the supplamentary angle of 160 degrees?
20 degrees. the definition of a supplementary angle is two angles that add up to 180 degrees.
