4.
Calculate the equivalent resistance of the network across the points A&B​

In the 30-60-90 triangle below side s has a length of and side r has a length

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.

Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?