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To find the number of triangles that can be formed in an 18-gon, you can use the formula for combinations: ( C(n, k) ), where ( n ) is the number of vertices and ( k ) is the number of vertices needed to form a triangle (which is 3). For an 18-gon, this is calculated as ( C(18, 3) = \frac{18!}{3!(18-3)!} = \frac{18 \times 17 \times 16}{3 \times 2 \times 1} = 816 ). Therefore, there are 816 triangles that can be formed from the vertices of an 18-gon.
What else can I help you with?
What is the name of the man that had something to do with triangles?
A man who has something to do with triangles could be a geometry teacher, a musician in an orchestra, of a road sign maker. You may also be thinking of Pythagoras who invented the pythagorean theorum (A^2+B^2=C^2).
How man triangles can be isosceles and have an angle of 65 degrees?
Infinitely many. Having found one triangle, you can find infinitely many similar triangles.
What is triangle x 27?
27 triangles.27 triangles.27 triangles.27 triangles.
What traingle don't have a right angle?
Triangles without right angles are:- Scalene triangles Obtuse triangles Isosceles triangles Equilateral triangles
Are Triangles equilateral triangles?
Triangles are equilateral triangles only when all of their 3 sides are equal in lengths.
How man triangles can you create from 3 points?
just 1 triangle
What is the name of the man that had something to do with triangles?
A man who has something to do with triangles could be a geometry teacher, a musician in an orchestra, of a road sign maker. You may also be thinking of Pythagoras who invented the pythagorean theorum (A^2+B^2=C^2).
How man triangles can be isosceles and have an angle of 65 degrees?
Infinitely many. Having found one triangle, you can find infinitely many similar triangles.
Are some isosceles triangles equilateral triangles?
All isosceles triangles are not equilateral triangles
Some equilateral triangles are not isosceles?
All isosceles triangles are not equilateral triangles
What is triangle x 27?
27 triangles.27 triangles.27 triangles.27 triangles.
How can you classify triangles by their angles?
Triangles may be right triangles equilateral triangles acute or obtuse triangles
Are all equilateral triangles acute triangles?
Yes all equilateral triangles are acute triangles, but not all acute triangle are equilateral triangles.
What traingle don't have a right angle?
Triangles without right angles are:- Scalene triangles Obtuse triangles Isosceles triangles Equilateral triangles
How many triangles are in 1 triangles?
there are 27 triangles in a triangle
Are Triangles equilateral triangles?
Triangles are equilateral triangles only when all of their 3 sides are equal in lengths.
Are all triangles semmetrical?
No. But all isosceles triangles and equilateral triangles are.
