You can put this solution on YOUR website! triangle
edge lengths | (2 sqrt(13) | 2 sqrt(26) | 2 sqrt(13))
interior angles | (45° | 90° | 45°)=(0.785398 radians | 1.5708 radians | 0.785398 radians)
interior angle sum | 180° = pi rad
height is 2sqrt(13)