Question
Class 6MathematicsUnderstanding Elementary Shapes

In the given figure, find the values of x, y, z, s and m.

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Verified Answer

Given that ∠A = 40°

(i) ∠DAB + ∠ABC = 180° (adjacent angles)

⇒ 40° + ∠ABC = 180°

⇒ ∠ABC = 180° – 40° = 140°

Hence, ∠x = 140°

(ii) ∠x + ∠y = 180° (adjacent angles)

⇒ 140° + ∠y = 180°

⇒ ∠y = 180° – 140° = 40°

Hence, ∠y = 40°

(iii) ∠y + ∠z – 180° (adjacent angles)

⇒ 40° + ∠z = 180°

⇒ ∠z = 180° – 40° = 140°

Hence, ∠z = 140°

(iv) ∠x + ∠s = 180° (straight angles)

⇒ 140° + ∠s = 180°

⇒ ∠s = 180° – 140° = 40°

Hence, ∠s = 40°

(v) ∠m + ∠z = 180° (straight angles)

⇒ ∠m + 140° = 180°

⇒ ∠m = 180° – 140° = 40°