Răspunsuri

2014-10-11T22:09:48+03:00
<ABC + <BAD = 180°
<ABC = 5 * <BAD
=> <ABC + <BAD = 5 * <BAD + <BAD = 6 * <BAD = 180°

=>  <BAD = 180 / 6 = 30°  
=>  <ABC = 5 * <BAD = 5 * 30 = 150°
Dar:
<BAD = <BCD = 30°
<ABC = <ADC = 150°


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