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Equilateral triangles have 3 sides all of the same lengths and the three angles are equal (60°).

Isoceles triangles have two sides of equal length with both of those side angles being equal while the other is different.

Scalane triangles have all sides of different lengths and different angles.

Right angled triangles have one angle of 90° and the other two will total 90°.

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Q: What is the different between all of the 4 triangles?

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No. Triangles all have three sides.

Because all other polygons are made from triangles as for example an 8 sided octagon has 6 triangles within it or a 6 sided hexagon has 4 triangles within it.

Tetrahedron

You could draw four different triangles in a 4-sided polygon, but two are enough to define the polygon.

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No. Triangles all have three sides.

No because squares have 4 sides whereas triangles have 3 sides

8

Because all other polygons are made from triangles as for example an 8 sided octagon has 6 triangles within it or a 6 sided hexagon has 4 triangles within it.

Tetrahedron

You could draw four different triangles in a 4-sided polygon, but two are enough to define the polygon.

Five. They are:Tetrahedron (4 triangles)Cube (6 squares)Octahedron (8 triangles)Dodecahedron (12 pentagons)Icosahedron (20 triangles).

No because all triangles have only 3 sides whereas quadrilaterals have 4 sides.

i dont know you tell me,

no all triangles have 3 angles

A four faced figure is a tetrahedron. If they are all congruent triangles, they are all equilateral triangles and it is a regular tetrahedron - one of the 5 Platonic Solids.

isosceles, scalene , equilateral, right angle triangle