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The sum of the interior angle measures of an octagon?
To find interior angle measurements, you must divide the shape into triangles by drawing diagonal lines. The diagonal lines draw triangles, and the interior angle measure of triangles are always 180 degrees. The sum of interior angles of an octagon is 1080 degrees. How ever many triangles you have, multiply it by 180. See octagons in the link for more help,
Does the interior angles of all triangles measure 360 degrees?
Yes
How many different isosceles triangles have at least one angle that measures exactly 20?
If one angle measures 20 degrees then the other two angles must each measure 80 degrees and many other similar or congruent isosceles triangles can have the same interior angles.
Do acute triangles have any measures greater than ninety degrees?
No only obtuse triangles have a measure over 90 degrees:)
What is the measure of one interior angle of a regular 12 gon?
Each interior angles measures 150 degrees
How many interior angles are in a triangle?
Triangles have 3 interior angles that measure 180 degrees total.
What is the measure of an interior angle of a regular dodecagon?
Each interior angle measures 150 degrees Each exterior angle measures 30 degrees
What the measure of interior angle of an equiangular pentagon?
Each interior angle measures 108 degrees
What measure of the interior angles of a polygon is 720 degrees?
If it's a regular polygon then each interior angle measures 120 degrees.
Each interior angle measure of a regular octagon is?
Each interior angle measures 135 degrees
Measure of each interior angle of a regular nonagon?
Each interior angle measures 140 degrees
What is the measure of one interior angle of a regular decagon?
Each interior angle measures 144 degrees
