Question

line ED is parallel to AB such that angle CDE =40 and CBA=50. Find angle DCB​

Answer 1

Answer:

50°+ <CAB+ <ACB= 180°

<CAB= 40°--------------(interior angles)

<ACB=180°-90°=90°

<ACB+<DCB= 180°

<DCB= 90°

Step-by-step explanation:

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