Acute
A 30-60-90 right triangle
Right Triangles
Equilateral triangles.
Equilateral triangles have rotational symmetry.
Scalene triangles
A 30-60-90 right triangle
A parallelogram can be split into two congruent triangles known as "parallelogram halves" or "diagonally opposite triangles." These triangles share a common base, which is half the length of the parallelogram's diagonal. The height of each triangle is the perpendicular distance between the base and the opposite side of the parallelogram.
That will depend on what type of triangle it is as for example if it is an isosceles triangle then it will form two congruent right angle triangles.
it is a right triangle because a rhombus' diagonals are perpendicular
isosceles triangle
Right Triangle
An isosceles triangle
Equilateral triangle
Equilateral triangles.
Right Triangles
90 degree triangles are always similar.
Equilateral triangles have rotational symmetry.