What is the midpoint of AB of A(-2,e) and B (10,4)

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a

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.

Find the measure of anglec in the following triangle