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The ancient Greeks used base 6 numbers and thought that the number 6 had some kind of power. This thinking was backed up by the number of days in a year. When the Ancients went about measuring the year, they watched the sun set each day over the horizon. Where it set, it would be marked on a circle. After a while, they noticed that about 360 of these evenly spaced marks would fill up a circle. Any rounding error is because of the power of the number 6 and 6*6=36 and so this was special too and the number of degrees of a circle became 360. 360/24=15degrees => the earth turns 15 degrees in an hour 60 seconds a minute, 60 minutes an hour => 3600 seconds and hour This is also why angles are measure by degrees (o), minutes ('), and seconds ("). 360 degrees is an arbitrary number that (roughly) matches the length of the year by chance. Gradients are another measurement of angle defined as there being 100 (an arbitrary number based on our number system) Gradients in a circle. A better mathematical measurement of angles is radians. There are pi~3.141 radians in a circle.
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How are angles classified?
by measuring it:)5
What is the sum of angles in a rhombus?
The sum of the interior angles is 360 and the sum of the exteriors is 360 also.
What do the angles in a parallelogram add up to?
360°The 4 interior angles add up to 360 degreesThe 4 exterior angles also add up to 360 degrees
Do the angles of a polygon have to add to 360 degrees?
The exterior angles of a polygon add up to 360 degrees.
What is sum of interior and exterior angles of a concave quadrilateral?
-- The sum of exterior angles of any polygon is 360 degrees.-- The sum of interior angles of any quadrilateral, no matter what shape, is 360 degrees.-- 360 + 360 = 720 degrees.
What is the instrument use in measuring angles?
a protractor
What is a polygon with all the interior angles measuring 900?
The angle must be somewhere between zero and 360 degrees.
When do you use theodolite for surveying?
To measure Angles, Process of Measuring Horizontal and vertical Angles
If two angles in a parallelogram are equal to 35 degrees what are the measurements of the other two angles?
The sum of the internal angles in a parallelogram is 360 degrees. Since there are two equal pairs of angles measuring the same, then each of the second pair of angles is equal to (360 - (35 x 2)) / 2 = 145 degrees.
What is the use in measuring an angle?
Angles are measured using a protractor
What is the degress of a square?
360 degrees cause a square has equal sides and 4 equal right angles and a right angle = 90 degrees so 90x4=360 degrees
What is the sum of both angles 180?
If both angles are 180, their sum is 360!If both angles are 180, their sum is 360!If both angles are 180, their sum is 360!If both angles are 180, their sum is 360!
A polygon has interior angle 165 degrees how many sides has it?
A regular polygon with interior angles measuring 165 degrees each will have exterior angles measuring 15 degrees each, since each pair of interior/exterior angles forms a linear pair whose measures total 180 degrees. For any polygon, the sum of the exterior angles is 360 degrees. You can find how many sides, and therefore vertices, in the polygon by dividing 360 by 15. In this case, the polygon has 360/15 = 24 sides.
What is an accurate way of measuring angles?
A protractor is the most accurate way of measuring angles.
What regular figure's angles each measure 144 degrees?
The formula for the angles of a regular n-gon is 180(n-2)/n. If 180(n-2)/n = 144 then 180n-360 = 144n so 36n = 360 and n=10. This means that a regular decagon has angles measuring 144 degrees.
How are angles classified?
by measuring it:)5
What is the sum of exterior angles of a triangle?
900 º If the three angles in the triangle are x, y, and z then: x + y + z = 180º The exterior angles are: (360 - x) + (360 - y) + (360 - z) = 360 + 360 + 360 - (x + y + z) = 360 + 360 + 360 - (180) = 900º
