In quadrilateral abcd ad=bc, m∠dac=50°, m∠dca=65°, m∠acb=70°. find m∠abc.

m<ABC= 55 degrees

Step-by-step explanation:

m<CAD+m<ACD+m<ADC=180 degrees              Sum of <'s in triangle

50+65+m<CDA=180 degrees                               substitution

m<CDA=65                                                             Algebra

AC=AD=BC                                                             Def of Isos triangle

m<ACB+m< ABC+m<BAC=180 degrees              Sum of <'s in triangle

m<ABC=m<CAB                                                     Def of Isos triangle

70+2m<ABC=180                                                    Substitution    

m<ABC=55                                                              Algebra        

45 minutes

step-by-step explanation:

answer: yes i agree that you should not put it on/p>

step-by-step explanation: the reason for this is that it wastes other peoples time and also make them fail as well and that is never good.