4.5.Converse: If two angles have a common vertex,then the angles are adjacent. False;/ABDis notadjacent to /ABC.Inverse: If two angles are not adjacent, then theydo not have a common vertex; False,/ABCand/DBEhave a common vertex and are notadjacent.Contrapositive: If two angles do not have acommon vertex, then they are not adjacent; true.Page 81Reading Mathematics1.Conditional: If a calculator runs, then it hasbatteries.Converse: If a calculator has batteries, then it willrun.False; a calculator may be solar powered.2.Conditional: If two lines intersect, then they arenot vertical.Converse: If two lines are not vertical, then theyintersect.False; two parallel horizontal lines will notintersect.3.Conditional: If two angles are congruent, thenthey have the same measure.Converse: If two angles have the same measure,then they are congruent.true4.Conditional: If 3x24520, then x57.Converse: If x57, then 3x24520.
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This note was uploaded on 12/19/2011 for the course MAC 1140 taught by Professor Dr.zhan during the Fall '10 term at UNF.