What fractional part of a pound is an oz

What term makes it inconsistent y=2x - 4

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.

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons