Alcohol Effects question 3. A âhangoverâ is perhaps the least concerning effect amongst the gamut of negative health consequences to drinking â which also includes cardiovascular damage, increased risk for depression, liver damage, and cancers.
A quadrilateral is a closed figure with four straight sides. A closed figure means there are no gaps between sides and no side extends past the end of another side. If both segments lie inside the quadrilateral, then the figure is convex.
Artzy proves these propositions about quadrilateral shapes: 1  If p = ( 1 â q ) â 1 , {\displaystyle p=(1-q)^{-1},} then the quadrilateral is a parallelogram. 2  If a parallelogram has |arg p| = |arg q|, then it is a rhombus. 3  When p = 1 + i and q = (1 + i)/2, then the quadrilateral is square.