Yes because
sum of supplement of an angle = 180
and
right angle = 90
so,
90 + 90 = 180
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Nandini Gupta answered this
Yes two right angles can be supplementary because measure of the right angle is 90 which is half of 180 so when we will add 90 two times we will get 180 which is a supplementary angle.
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Anshika Mahroliya answered this
Yes
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Prityush answered this
Yes because right angle is 90 & the sum of 90 is 180