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Because it is easier to use. If a right angle were to be 100 degrees when you compare it to 90, 90 has a lot more factors than 100. It's probably in the ancient days when people made it like that.
Wiki User
∙ 8y ago
Wiki User
∙ 14y agoThey don't always.
The angles inside any triangle add up to 180 degrees.
The angles inside any shape with 4 sides add up to 360 degrees.
The angles inside any shape with 5 sides add up to 540 degrees.
The angles inside any shape with 6 sides add up to 720 degrees.
If you buy a $3 surprise bag of fifty assorted angles from a military surplus store,
there's no telling what they might add up to. It could be anything.
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What angles add up to 360 degrees?
explementary angles add up to 360 degrees supplementary angles add up to 180 degrees complementary angles add up to 90 degrees
Do all internal angles in polygons add up to 360 degrees?
No, it is the EXTERNAL angles that add to 360 degrees.
What degrees are the angles of a hexagon?
Exterior angles add up to 360 degrees Interior angles add up to 720 degrees
What kind of angles add up to 360?
The exterior angles of any polygon add up to 360 degrees
What do side by side angles add up to in a parallelogram?
360 degrees In a parallelogram, all the angles will add up to 360 degrees. Think of a square.
What angles add up to 360 degrees?
explementary angles add up to 360 degrees supplementary angles add up to 180 degrees complementary angles add up to 90 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 the sum of the interior angles of a triangle is 360 degrees?
Interior angles add up to 180 degrees Exterior angles add up to 360 degrees
Do all internal angles in polygons add up to 360 degrees?
No, it is the EXTERNAL angles that add to 360 degrees.
How much angles is there on a parallelograms?
It has 4 interior angles that add up to 360 degrees It has 4 exterior angles that add up to 360 degrees
What degrees are the angles of a hexagon?
Exterior angles add up to 360 degrees Interior angles add up to 720 degrees
What do the angles in a trapezium add up to?
The interior angles of every 4-sided figure add up to 360 degrees.
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
What kind of angles add up to 360?
The exterior angles of any polygon add up to 360 degrees
What do the angles in a kite add up to?
Interior angles add up to 360 degrees
What do the angles of a parallelogram add up to?
The angles in a parallelogram add up to 360 degrees
What do side by side angles add up to in a parallelogram?
360 degrees In a parallelogram, all the angles will add up to 360 degrees. Think of a square.
