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The degrees inside a triangle _always_ add up to 180. Do you need proof?

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17y ago

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On the surface of a sphere the sum of the angles of a triangle equals 180 degrees?

That's correct! On the surface of a sphere, the sum of the angles of a triangle can be less than 180 degrees or more than 180 degrees depending on the size of the triangle and the curvature of the sphere. If the triangle is small enough compared to the size of the sphere, the sum will be approximately 180 degrees, but this is not always the case.


Isosceles triangles equal 180 degrees?

The total sum of angles of a triangle is 180, so only one angle of a triangle can be 90 ( making it a right angled triangle).However the sum of two angles of a triangle can be equal to 90, once again making it a right angled triangle.it is possible that two angle can be equal to 180-The acute angles of a right triangle are complementary.SUPPOSE ABC IS A TRIANGLE, where C = 90, thenA+B+90 = 180,A+B = 180-90or A+B = 90,or A = 90-Bso it's possible.


What is at 30 degrees 31 minutes north 75 degrees 12 minutes west?

Read percy Jackson and the sea of monsters. Or the answer is THE SEA OF MONSTERS. In other words THE BERMUDA TRIANGLE. That's what mortals call it.


What are the angles of triangles?

That depends upon the lengths of the sides. If the three side lengths are A, B and C, then the three angles are given by:- # a = cos-1( (B2 + C2 - A2) / (2BC) ) # b = cos-1( (A2 + C2 - B2) / (2AC) ) # c = cos-1( (A2 + B2 - C2) / (2AB) )


When are the sun moon and earth all at right angles?

That happens at half-moon, when the Moon is at the right-angle of a right-angled triangle. The acute angle of the triangle is at the Sun and it is only 0.147 degrees on average. At half-moon you can look at the Moon, and the Sun is approximately 90 degrees to the right or the left, depending on whether the Moon is waxing or waning.