Dawn is trying to find the dimensions of a parallelogram. she knows that the base is one unit less than twice the height of the shape. the area is 91 square units. how long are the base and height?

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.

What percent of the butterfly tents contain at most 10 cocoons

What is the distance between points a and b?