Answer:

Step-by-step explanation:
Factor
out of 
We set up a proportion: 63/?= 28/100
Cross multiply: 28*?= 63*100
⇒ ?= 63*100/28= 225
28% of 225 is 63.
Answer:
congruent
Step-by-step explanation:
If two lines intersect to form a linear pair of congruent angles, then the lines are perpendicular. When two adjacent angles form a linear pair, their non-shared sides form a straight line (m).
i'm not sure tho
Answer:

Step-by-step explanation:
Let point
be the point where the straight line drawn from point
meets the straight line
, it is evident that
and
is similar given that both triangles share the same angle,
. Hence, the ratio of the sides of each triangle is the same. Specifically,
.
Performing cross multiplication yields
.