Ever wondered why triangles always add up to 180 degrees?
Angle
Ever wondered why triangles always add up to 180 degrees?
Imagine you're building a triangular bookshelf and want to make sure it fits perfectly in your corner.
Picture the corner as a circle, with the bookshelf forming a triangle inside it. The three corners of the triangle touch the circle, dividing it into three equal parts. This means the angles inside the triangle always add up to 180 degrees.
Example
If the circle represents 360 degrees, dividing it into three equal parts means each part (angle) is 120 degrees, but the sum of the three parts (angles) is 360 degrees.
Remember this
The angle sum of any triangle is always 180 degrees.
Text adapted from Wikipedia, licensed under CC BY-SA 4.0.
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