What is the perimeter of a trapezoid having side-length 10cm, 7cm, 6cm, and 7cm

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.

The total number of dental clinics total for the last 12 months was recorded

Which two undefined geometric terms always describe figures with no beginning or end?