In a pair of complementary angles, if one angle is decreased then other angle must so that both the angles still remains complementary.

Increase

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Decrease

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Equal

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Remains same

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Solution

The correct option is A Increase
Pair of angles $∠$ A and $∠$ B are complementary if,
$∠$ A + $∠$ B = $90^{\circ}$ .
If $∠$ A is decreased then in order to maintain sum = $90^{\circ}$ , other angle must increase.

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Similar questions

Sunita knows that the sum of complementary angles is equal to $90^{\circ}$ . She thinks that there can be a pair of complementary angles such that both of them are equal. Is she correct? If yes, then find such pair of angles.

Draw the pairs of angles as described below.If that is not possible, say why.

(i) Complementary angles that are not adjacent.

(ii) Angles in a linear pair which are not supplementary.

(iii) Complementary angles that do not form a linear pair.

(iv) Adjacent angles which are not in a linear pair.

(v) Angles which are neither complementary nor adjacent.

(vi) Angles in a linear pair which are complementary.

Two angles are complementary. If one measures $80^{\circ}$ , then the measure of the other angle is:

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Q. Can there be a pair of complementary angles such that both of them are equal? If yes, find the values of those angles.

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In a pair of complementary angles, if one angle is decreased then other angle must so that both the angles still remains complementary.

The correct option is A IncreasePair of angles ∠A and ∠B are complementary if, ∠A +∠B = 90∘. If ∠A is decreased then in order to maintain sum = 90∘, other angle must increase.

The correct option is A Increase
Pair of angles $∠$ A and $∠$ B are complementary if,
$∠$ A + $∠$ B = $90^{\circ}$ .
If $∠$ A is decreased then in order to maintain sum = $90^{\circ}$ , other angle must increase.