Which should equal 105° to prove that f // g?abСd

Less than straight angle and more that right...it's obtuse. It involves lines as well.

Step-by-step explanation:

:) Your welcome

a equals 105°

Step-by-step explanation:

angles in a straight line add up to 180°

a+75=180

a=180-75

a=105°

C

Step-by-step explanation:

because they are parallel lines

180-75=105

d

Step-by-step explanation:

it's a my g assadasd

Step-by-step explanation:

Option (4)

Step-by-step explanation:

From the figure attached,

∠b = 75° [Vertical angles]

If the lines f and g are parallel then,

∠b = ∠c [Corresponding angles]

Therefore, ∠c = 75°

Since m∠c + m∠d = 180° [Supplementary angles]

75° + m∠d = 180°

m∠d = 180° - 75°

m∠d = 105°

Therefore, measure of angle d should be equal to 105° to prove f and g are parallel.

Option (4) will be the answer.

since you have the 75, we know that a would equal 105 for line g , since a line = 180 degrees

 so to make line f parallel with g it needs the same angles with line n as line g has

so if a = 105, then angle d would also need to be 105

 The answer is D

Step-by-step explanation:

Step-by-step explanation:

The Answer is Option D, which is d.

If f is parallel to g, then c should equal 75 degrees because c and 75 degrees are vertical angles. If C is 75 degrees then D must equal 105 degrees because c and d are both on the left side of line f which means they must add up to 180 degrees, which should get you to this equation: c + d = 180. We can replace c for 75 because we already known that, which should get you: 75 + d = 180. So you should then subtract 75 against 180 to get your d = 105.

Hope this helps, Have a good day!

A Brainliest would be nice.

we know that

If lines f and g are parallel

then

the angle c must be equal to

∠c=[tex]75\°[/tex] ------> by alternate exterior angles

and

∠c+∠d=[tex]180\°[/tex] ------> by supplementary angles

so

∠d=[tex]105\°[/tex]

therefore

the answer is

The angle d should be equal to [tex]105\°[/tex] to prove that f ∥ g