If the sum of measure of two angles is $180 °$ , then the angles are called __________ angles.

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Solution

We know that, supplementary angles are angles whose sum is equal to $180 °$ .
Hence, if the sum of measure of two angles is $180 °$ , then the angles are called supplementary angles.

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Similar questions

Q. An angle of measure 180° is called

(a) a zero angle
(b) a right angle
(c) a straight angle
(d) a reflex angle

Write the converse of each of the following statements.

(i) If the sum of measures of angles in a figure is 180⁰ , then the figure is a triangle.

(ii) If the sum of measures of two angles is 90⁰ then they are complement of each other.

(iii) If the corresponding angles formed by a transversal of two lines are congruent then the two lines are parallel.

(iv) If the sum of the digits of a number is divisible by 3 then the number is divisible by 3.

Q. An angle measuring 180° is called
(a) a complete angle
(b) a reflex angle
(c) a straight angle
(d) none of these

Fill in the blanks:

(i) If two angles are complementary, then the sum of their measures is _______.

(ii) If two angles are supplementary, then the sum of their measures is _______.

(iii) Two angles forming a linear pair are _______.

(iv) If two adjacent angles are supplementary, they form a _______.

(v) If two lines intersect at a point, then the vertically opposite angles are always _______.

(vi) If two lines intersect at a point, and if one pair of vertically opposite angles are acute angles, then the other pair of vertically opposite angles are _______.

If the sum of measures of two angles is $180 °$ and one of them is acute, then the other is a/an_____.

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If the sum of measure of two angles is 180°, then the angles are called __________ angles.

We know that, supplementary angles are angles whose sum is equal to 180°.Hence, if the sum of measure of two angles is 180°, then the angles are called supplementary angles.

If the sum of measure of two angles is $180 °$ , then the angles are called __________ angles.

We know that, supplementary angles are angles whose sum is equal to $180 °$ .
Hence, if the sum of measure of two angles is $180 °$ , then the angles are called supplementary angles.