What is the area of a regular decagon (10 sides) with an apothem length of 14 in, and a side length of 7.5 in.? Perimeter =
140 in
7.5 in
14 in
75 in

Area=
525 in^2
105 in^2
70 in^2
52.5 in^2

1. are the triangles similar and if so why? what is the value of x? show your work.

Is trapezoid abdc the result of a dilation of trapezoid mnpq by a scale factor of ? why or why not? yes, because ab and cd are each the lengths mn and qp. yes, because sides ab and cd are parallel to sides mn and qp. no, because ab is the length mn but cd is the length qp. no, because sides ab and cd have different slopes from sides mn and qp.

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.