

If two right triangles have a leg and a hypotenuse equal to one another, they are congruent.



If two triangles have two sides and the included angle equal to one another, they are congruent.



If two triangles have three sides equal to one another, they are congruent.



The length between the midpoints of two sides is half the distance of the third side



The area and perimeter of the triangle formed by joining the midpoints of a triangle.



The triangle formed by joining the intersection points of three circles with radii a, b, and c



The triangle formed by three tangential circles with equal radii.



