Question

math please help ...................... ..... ​

Answer 1

Answer:

the answer is d) 40°

Step-by-step explanation:

because the opposite angle of a quadrilateral are 180 °

so , 180°- 140 ° = 40°

Answer 2

answer:110 degrees

step by step explination:

as we can see in the above picture the angle subtended by arc at the center is twice the angle subtended by it on the remaining part of the circle...

so angle aob=140 degrees. the other angle will be 360-140=220 degrees..

the required angle=220/2=110 degrees...

dont do 140/2=70 degrees.

because 140 degrees is angle subtended by upper arc. so it violates the theorem.Our theorem said that the angle must be formed on remaining part of arc...

HOPE THIS IS HELPFUL..