One mark exercise problems V — task. Mathematics State Board, Class 6.

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Say true or false:

(i)

$20^\circ$ and

$70^\circ$ are complementary.

(ii)

$88^\circ$ and

$12^\circ$ are complementary.

(iii)

$80^\circ$ and

$180^\circ$ are supplementary.

(iv)

$0^\circ$ and

$180^\circ$ are supplementary.

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