Fill in the blank with acute, obtuse, right, reflex or straight angle.
When two right angles are added, they form a ________ .

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Solution

As we know that one right angle $= 90$ $°$
Then, sum of two right angle $= 90 + 90$
$= 180 °$
Since, value of straight angle is $180 °$
Hence, when two right angles are added, they form a straight angle.

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