1. Explain the steps to determine all sets of congruent sides and angles in two triangles given a statement of their congruence (ex Triangle TRN Triangle ABC). Include your reasoning for each step. You may create and use
a diagram to support your explanation.

The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron. the pyraminx shown below has edges 15\,\text{cm}15cm long and vertical height h=12.2\,\text{cm}h=12.2cm. the triangle drawn with dashed lines is a right triangle. what is the distance rr? round your answer to the nearest tenth.