Question

In the figure below, if m∠a = x + 3, which of the following represents m∠b?


x + 3 183 – x
180 – (x – 3) 180 – (x + 3)

Answer 1

angles a and b are supplementary

which means the 2 angles add to 180

so

x + 3 + b = 180

now just make b the subject

Answer 2

it would be 180-(x+3)

Answer 3

*tilts head confused*

Answer 4

lol ok a line is 180 degrees and A and B make up 180 so we have to make it into a equation= 180=a+b.... now we replace for what we know.... we know a=x+3 so the new equation is 180=a+3+b.... are you with me so far?

Answer 5

yeah

Answer 6

ok :D now we know what 180 is (180+a+3+b) BUT they want to know what be is.... so what do you think you would do to solve for b

Answer 7

isn't b=a?

Answer 8

soooo confused!

Answer 9

@hanifah no... if the angles for a and b were BOTH 90 degrees (right angle) then yes b=a

Answer 10

ok @cutecupcake... we need to solve for b... so in order to solve for be we have to subtract the total (180) by a (x+3).. thats how you will get b.

Answer 11

oh my bad, ill step out :)

Answer 12

lets agree to this
a+b=180
x+3+b=180
b=180-(x+3)

Answer 13

If line m intersects line n to form congruent angles of a linear pair, what is the relation between line m and line n?

Answer 14

1, 2 r angles of a linear pair
1+2=180

Answer 15

but u need
1=2 right ?
so
2 of <1=180
<1 = 90

Answer 16

Line m bisects line n. Line n bisects line m.
Line m is perpendicular to line n. Line n and line m are skew lines.

Answer 17

so m must be perpendicular to l

Answer 18

Line m is perpendicular to line n.

Answer 19

ohhh okay i get u thank u for the drawing btw it helps alot!