What is the missing statement in step 3 of the proof?
given: 41 is complementary to 22
22 is complementary to 23.
prove: m21 = m23
omz1 = m22
o mx1 + m2 = 90°
o m 2 = m23
om_2 + m23 = 180°
statements
21 is comp. to 2
2 is comp to 23
-
reasons
given
given
3. def. of comp. ls
subtr equality prop
def of comp. zs
6. subtr equality prop
7. trans prop
m_1-90°-m 2
5. m2-m23-90
6 m23-90°-m2
7 m21-23
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step-by-step explanation:

this is not a question

c

step-by-step explanation:

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.