Such are usually called equilateral triangles.
An equilateral triangle can also be called a "regular" triangle
A regular triangle would have all angles equal, each being 60o. Thus a right angled triangle is an "irregular" triangle in that one of its angles is 90o which is not 60o.
Triangle, square, hexagon.
BCR
-- Every triangle, no matter what its shape or size, has three angles inside it that add up to 180 degrees. -- Whyen you say "regular right angled triangle", I hope you don't mean that all three of its sides are the same length ... that's what "regular" usually means in geometry. It's impossible for a right triangle to have all of its sides equal.
Equilateral triangle, regular triangle.
An equilateral triangle can also be called a "regular" triangle
A regular triangle is an equilateral triangle. It can also be be called equiangular but that term is not used much.
equiangular and a regular triangle
Congruent
They are both regular polygons.
Triangle
Regular, Acute, and Equilateral * * * * * Regular and Equilateral are correct but not Acute. An acute triangle with angles of 50,60 70 degrees for example, is not regular. An equiangular triangle is the third possible name.
a triangle is not regular
I hope that you're not cheating on a quiz but an equilateral triangle can also be called a "regular" triangle.
Equilateral Triangle - if that is what you mean
A scalene triangle is irregular. Only an equilateral triangle is regular.