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Because of the formula: (n-2)*180 = total sum of interior angles where n is the number of sides of the polygon.

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Q: Why do triangles angles add up to 180 instead of 270?
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Related questions

What is an angle above 180 but less than 270?

There are all the angles between 180 and 270that lie between 180 degrees and 270 degrees angles


Some triangles have three right angles?

no. The sum of the angles must be 180. 90+90+90=270. Plus, If you tried to make a triangle with 3 right angles, you would end up with an incomplete rectangle


What is a 270 -360 angle called?

630


Why can't the angles of a right angled triangle be the same?

As you probably know, a right angle triangle has to have a right angle (only can have one). A right angle is 90 degrees. All the triangles' angles add up to total of 180 degrees and only 180 degrees. 180- 90 is 90. If you have two right angles then that's a rectangle (a square is a rectangle). If you do 90 * 3 that equals 270 degrees. 270 is way greater than 180.


What has an angle that measures 90-180 degrees?

270


What numbers have a right angles?

90, 180, 270 and 360


What are the quadrant angles?

Quadrant angles are the angle lies in different quadrants. The angles which lie between 0° and 90° are said to lie in the first quadrant. The angles between 90° and 180° are in the second quadrant, angles between 180° and 270° are in the third quadrant and angles between 270° and 360° are in the fourth quadrant Quadrant angles are the angle lies in different quadrants. The angles which lie between 0° and 90° are said to lie in the first quadrant. The angles between 90° and 180° are in the second quadrant, angles between 180° and 270° are in the third quadrant and angles between 270° and 360° are in the fourth quadrant


What is the sum of four angles if two are complementary and two are supplementary?

Should be 270 degrees. Supplementary angles add up to 180 Complimentary add up to 90. 180 + 90 = 270


What is an angle over 270 degrees?

All angles between 180 and 360 degrees are reflex angles.


Definition of benchmark angles?

90 degrees 180 degrees 270 degrees 360 degrees!


The sum of all the angles making up any triangle is 270 degrees?

No, it's 180 degrees


No right triangle is equiangular?

a triangle's has 3 angles and they all always add up to 180. for a triangle to have all angles be the same each angle must be 60 degrees. if one of them were 90 degrees, then the other 2 angles would have to be 90 degrees in order to keep it equiangular. if you add up these three angles, you will get 270 degrees. this is impossible. no right triangles can be equiangular