Question

fill in the blanks sum of the adjacent angles formed by a ray standing on a straight line is equal to Right angles

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Answer 1

Sum of the adjacent angles formed by a ray standing on a straight line is equal to two right angles.

Explanation:

• When a ray stands on a line, two adjacent angles are formed.

• We know that the angle lying on a straight line is 180°.

• The two angles being adjacent, make a total angle of 180° on the straight line, i.e., 2 × 90°, i.e., two right angles.

• Another way, we can see since the ray stands on the straight line, we can consider it is a perpendicular line.

• Thus, the two adjacent angles are right angles.

• So, the total angle

• = 90° + 90°, i.e., two right angles.

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If a ray stands on a line then the sum of the adjacent angle so formed is ___ .

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