Question

From the figure, the value of x-y=

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Answer 1

Answer:

angle y+ 120=180° {BCD is a line}

y=180-120=60°

now, by angle sum property of a triangle,

angle x=180°-(50°+y°)

x=180°-110°=70°

now, we need to find x-y

by substituting value

x-y

70-60

10°

Answer 2

Answer:

10°

Step-by-step explanation:

120°=50°+x(exterior angle is= to the sum of opp interior angles)

120°-50°=x

70°=x

50°+70°+y=180°

120°+y=180°

y=180-120

y=60°

x-y=70°-60°

=10°

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