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Two acute angles of aligiiFind the marked angles as shown in the figure50°40°50DB |
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Answer» x+20+40=180 (In triangle ABC) x=180-60 x=120y=20+40 (Exterior opposite angle is sum of interior angles)y=60 y+z+50=180 ( In the smaller triangle) 60+50+z=180 z=180-110z=70 i. x=180°-(40°+20°){angle sum property of a triangle} =180°-60° =120°. y=180°-x{linear pair} =180°-120° =60°. z=180°-(50°+y) =180°-(50°+60°) =180°-110° =70°. ii.click the picture correctly |
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