Sec HonL 5 marks each)a) In a quadrilatera AB c Dand carelateral ABCD,

1.	Sec HonL 5 marks each)a) In a quadrilatera AB c Dand carelateral ABCD, Do and cLD and ic respectiveand co arebisectorsrove that.. LcoDt difterent
Answer» Angle COD= 1800- 1/2angle C-1/2 angle D=1800-1/2(angle C+D)----------(1) Angle (A+B+C+D)=3600 AngleC+D= 3600 - AngleA- angle B--------------(2) Substituting (2) in (1) Angle COD= 1800-1/2(3600- angle A- Angle B) Angle COD= 1800-1800+1/2 Angle A + 1/2 Angle B= 1/2(Angle A+ Angle B)

Sec HonL 5 marks each)a) In a quadrilatera AB c Dand carelateral ABCD, Do and cLD and ic respectiveand co arebisectorsrove that.. LcoDt difterent

Answer»

Angle COD= 1800- 1/2angle C-1/2 angle D=1800-1/2(angle C+D)----------(1)

Angle (A+B+C+D)=3600

AngleC+D= 3600 - AngleA- angle B--------------(2)

Substituting (2) in (1)

Angle COD= 1800-1/2(3600- angle A- Angle B)

Angle COD= 1800-1800+1/2 Angle A + 1/2 Angle B= 1/2(Angle A+ Angle B)