Maybe they are bisector, median, altitude and the middle perpendicular. (I hope I put it in English right :)
A triangle has 3 lines of symmetry.
a equilatral triangle has at least up to 4 lines of symetry
A triangle has 3 sides and if two sides are equal then it's an isosceles triangle with one line if symmetry but if all sides are equal then it's an equilateral with three lines of symmetry.
A triangular based pyramid has no parallel lines but it does have 4 faces, 6 edges and 4 vertices.
Maybe they are bisector, median, altitude and the middle perpendicular. (I hope I put it in English right :)
A triangle has 3 lines of symmetry.
a equilatral triangle has at least up to 4 lines of symetry
How many lines of symmetry does an equilateral triangle have?
scalene
triangle rectangle and cube
It depends what type of triange it is. If it is an equilateral triangle, you can draw 3 lines of symmetry If it is an isosceles triangle, you can draw 1 line of symmetry If it is a scalene triangle, you cannot draw any lines of symmetry
4 sides, each of which is a isosceles triangle with 3 lines of symmetry, gives 12.
A triangle has 3 sides and if two sides are equal then it's an isosceles triangle with one line if symmetry but if all sides are equal then it's an equilateral with three lines of symmetry.
No. A triangle has 3 sides, and a parallelogram has 4 sides. No kind of triangle can be a parallelogram, and no kind of parallelogram can be a triangle. The question is a lot like asking: Can this particular model of Toyota be a Ford ?
A triangular based pyramid has no parallel lines but it does have 4 faces, 6 edges and 4 vertices.
All of the three sides of a triangle can be parts of parallel lines; it's just that no two of them can be parallel with each other. They can be parallel to some other line(s). In plane geometry parallel lines cannot form the sides of a common triangle.