Question

If x+y= w+z, then prove that AOB is a line.

plzz help. (NCERT class9)

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Answer 1

Answer:

Pls see below for answer.

Step-by-step explanation:

x+y=w+z(given)------1

x+y+w+z=360

w+z+w+z=360(from1)

2w+2z=360

2(w+z)=360

w+z=180

We know that,

If the 180° is angle then it is a straight line.

Therefore, AOB is a straight line.

Hope it's helpful!!!

Answer 2

Answer:

because x+y is equal to 180° because this angle is linear pair

same thing done by w and y also

so this line is straight