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The three interior angles of a plane triangle add up to 180 degrees, or pi radians.
If the sum is not 180° you are not in Euclidean space.
If the three angles of a triangle add up to more than 180° then you are in a spherical space, if the sum is less than 180° it is a hyperbolic space.
Example:Think of a triangle on the Earth with one corner at the North Pole, the other corners on the Equator 90° apart (say at 0° [west of Nigeria in Africa] the other at 90° W [West of Ecuador in South America]).Each of these angles is 90° so the sum is 270° -
The surface area of the triangle is one eighth of the surface of the globe. But it is a triangle (on a sphere)!
On a plane, always 180 degrees. If the sum is not 180° you are not in Euclidean (flat) space.
If the three angles of a triangle add up to more than 180° then you are in a spherical space, if the sum is less than 180° it is a hyperbolic space.
Example:Think of a triangle on the Earth with one corner at the North Pole, the other corners on the Equator 90° apart (say at 0° [west of Nigeria in Africa] the other at 90° W [West of Ecuador in South America]).
Each of these angles is 90° so the sum is 270° -
The surface area of the triangle is one eighth of the surface of the globe. But it is a triangle (on a sphere)!
The sum of the internal angles of any triangle is 180 degrees.
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoTriangles always have 3 sides. The interior angles add up to 180 degrees.
Wiki User
∙ 14y agoThe sum of the interior angles of an obtuse triangle as with all triangles is 180 degrees.
Wiki User
∙ 13y ago180 degrees
Anonymous
180
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What do all of the sides add up to in a triangle?
The sides can add up to any number. The angles, however, always add up to 180o.
How many sides can a triangle have?
All triangles have 3 sides and 3 inside angles that add up to 180 degrees
What os a triangle with sides?
A triangle has 3 sides and 3 inside angle that add up to 180 degrees
How do you find the perimeter of a triangle?
you add up the measures of the sides Perimeter=a+b+cAdd up the three sides together
What do the all the sides add up to in a right triangle?
180
How do you find the permimeter of a triangle?
Add up the three sides.
Do the sides on a scalene triangle add up to 25.5?
gin
How many sidesangles and vertices does a triangle have?
A triangle has 3 sides and 3 vertices with 3 interior angles that add up to 180 degrees
How many sidesvertices and angles does a triangle has?
A triangle has 3 sides, 3 vertices and 3 interior angles that add up to 180 degrees.
What must all sides of a triangle add up to?
i believe 160
How about when you are calculating the volume of a solid with a regular shape?
It is square because when you add it up then you subract and add triangle then you calulate the sides and get triangle
How many dimensions triangle have?
A triangle has 3 sides and 3 inside angles that add up to 180 degrees. If you are asking about physical dimensions, a triangle is a two-dimensional shape.
