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1 It is a triangle

2 It has three sides

3 Each side is the same length

4 Each internal angle is the same size

5 Each external angle is the same size

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Q: What are at least facts regarding the properties of an equilateral triangle?
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Why is a triangle a regular polygon?

This question is based on a misunderstanding of facts. A triangle can be but need not be a regular polygon. In fact most triangles are not regular: only equilateral triangles are.


Is an equilateral right triangle possible?

No, that's not possible. Consider these facts: -- all three angles of any triangle always add up to 180 degrees -- all three angles in an equilateral triangle have to be the same size -- a right triangle has a right angle in it; a right angle is 90 degrees An equilateral right triangle would need three right angles in it, and they would add up to 270 degrees. As we said earlier: Impossible.


What are facts about the isosceles triangle?

An isosceles triangle has two equal sides


What are a score or more facts and features of a triangle and its properties?

1 It's a 3 sided polygon which means many sides 2 Its sum of its 2 smaller sides is greater than its longest side 3 It has no parallel sides 4 It has no diagonals 5 It has 3 interior angles that add up to 180 degrees 6 It has 3 exterior angles that add up to 360 degrees 7 It can be a scalene triangle 8 It can be an obtuse triangle 9 It can be an isosceles triangle 10 It can be an equilateral triangle 11 Its longest length is opposite to its largest angle 12 Its hypotenuse is its largest length as a right angle triangle 13 It brought fame to the ancient Greek mathematician Pythagoras 14 Its hypotenuse when square is equal to the sum of its squared sides 15 Its smallest angle is opposite to its shortest side 16 It will tessellate leaving no gaps or overlaps 17 It's a right angle triangle when it has a 90 degree angle and 2 acute angles 18 It can be both an isosceles triangle and a right angle triangle 19 It has a perimeter which is the sum of its 3 sides 20 It has an area which is: 0.5*base*perpendicular altitude 21 Its area is also: 0.5*a*b*sin(A) whereas a and b are sides and A is included angle 22 It's subjected to the rules of trigonometry 23 It's the 1st and foremost building block of other polygons 24 Its 3 corners are vertices which is plural for vertex 25 It has 1 line of symmetry as an isosceles triangle 26 It has 3 lines of symmetry as an equilateral triangle 27 It has rotational symmetry to the order of 3 as an equilateral triangle 28 it's a 2 dimensional shape 29 It can be the base of a 3 dimensional pyramid 30 It can be doubled up to form a 4 sided quadrilateral


What are at least 12 facts about the triangle?

It has 3 sides It has no diagonals It has 3 interior angles It has 3 exterior angle Interior angles add up to 180 degrees Exterior angles add up to 360 degrees Can be right angled Can be equilateral Can be obtuse Can be isosceles Can be scalene Multiples of a triangle can form other polygons Its lengths, area and angles can be determined by means of trigonometry Pythagoras' theorem is applicable to all right angle triangles