Are there 360 degrees in a triangle

Stage and screen. Birds and the bees. Why degrees intstead of 1, 10, or even ? David Hughes, Toronto, Canada Because one of the essential varibales in geometry is the number three. For example, three being a factor of means that an equilateral triangle has angles of 60 degrees.

What would their angles be in a metric system? It originated in France as the 'grade' along with other metric units. I only know of the French artillery actually using it. Angular measurement in degrees or radians is given in reference to a circle, degrees or 2 Pi radians being the measure one full revolution. If we were to divide a circle into anything other than deg we would have to change our calendars too - the ancient Greeks worked out that there were days in the year, and that, therefore, we progress about the sun at one degree per day - they were quite close given that they worked on observation alone!

Peter Clark, Cambridge, UK The degree is an arbitrary unit; basically any division of a circle would work as a system of measurement.

There is a more fundamental unit call the Radian. This is the angle subtended by an arc of a circle equal in length to its radius.

Since the circumference of a circle is 2 x pi x radius one there are 2 pi, or 6. This is fine for calculations on angular motion but difficult to work out in your head. Ray Gallagher, Belfast, Northern Ireland We inherited degrees from the Babylonians, but many ancient societies were highly interested in astronomy and in some megalithic Britain?

This is logical, since the earth turns on its axis times a year. Their measurements seem to have been interrelated and not arbitrary as a metrically divided circle would be. The Babylonians probably reduced this to as it divides so much more easily by many factors.

After some time struggling to get it to work, I noticed that the scale on which horizontal angles were measured read degrees rather than The precise statement of the conjecture is: Proof: This follows directly from the Quadrilateral Sum Conjecture which says that the sum of angles in any convex quadrilateral is equal to degrees. Begin typing your search term above and press enter to search. Press ESC to cancel. Skip to content Home Physics What is the sum of three angles of a triangle?

Ben Davis May 4, What is the sum of three angles of a triangle? Can a spherical triangle have 3 right angles? Can a triangle have all right angles? What type of angles does a triangle have? Can you have a triangle with all the three angles greater than 60 degree? What angles make up a triangle? Which set of angles can form a triangle acute? Which set of angles could be the interior angles of a triangle? Why sum of angles of a triangle is ? What is the sum of angles at a point?

What is the sum of all exterior angles of a triangle? What is the formula for sum of exterior angles? The quasar J is 13 billion light-years away from Earth.

But it still can reveal a lot about our own universe. Brighstoneus simmondsi has a big lump around the nostrils, like a chunky alligator. Sign up to receive Popular Science's emails and get the highlights.