Three straight sides Closed figure two dimensional three angles
No Equilateral triangles are triangles that have all of its three sides the same exact measurement. This means that if all the sides are the same then all of the interior angles will equal the same. And they always equal 60 degrees in an equilateral triangle. Equivalent traingles are just traingles that are equal in size and angles to another triangle equal. Equivalent traingles can be equilateral but they do not have to be.
4 right angles, no other angles.
There can be infinitely many triangles in a hexagon.
It has 6 angles, none of which are right angles.
0 right angles
A regular hexagon as no right angles. An irregular hexagon could have from none to as many as five right angles.
a tetrahedron has 3 Right angles
A right angle is 90 degrees
2 right angles
There are zero right angles in a trapizoid............
12 right angles.