Question

find an angle which os equal to its supplement​

Answer 1

Step-by-step explanation:

Let the angle be x, put x+x=180∘, and then find the value of x to solve the question. We have to find the angle which is equal to its supplement. Let the angle be x. Hence, the angle which is equal to its supplement is 90 degrees.

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Answer 2

Let x be two equal angles of its supplement.

Therefore, x+x=180⁰  [Supplementary angles] 

⇒2x=180⁰

⇒x=180o⁰/2

⇒x=90⁰

Thus, 90⁰ is equal to its supplement.