Question

 Two angles of a triangle are 100• and 55• respectively. Find the third angle.​

Answer 1

As we know that the sum of all angles of a triangle is 180°.

Let the third angle be x

===> 100°+55°+x = 180°

===> 155°+x=180°

===> x= 180°-155°

===> x= 25°

Third angle is 25°.

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Answer 2

Answer:

We know that

<a+<b+<c=180°

100+55+<c=180°

155+<c = 180°

<c=180-155

<c=25°

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