Answer:
8
Step-by-step explanation:
RT=10 it is on number A
XY=18 it is on number B
YZ=12 it is on number C
So, I think that no D 8 is in last so that is the answer.
Answer: x = 31
Step-By-Step:
<u>To Find x:</u>
<u />
(Angle Sum Property Of Triangles)
(Remove the brackets)
<u />
<u />
(Group Accordingly)
<u />
<u />
= 
=

= 
= 
= 
= 
<u>Therefore</u> x = 31
So,
Angle A = x + 10 = 31 + 10 = 41
Angle B = 2*x + 20 = 2*31 + 20 = 82
Angle C = 2*x - 5 = 62 - 5 = 57
For a polygon to be regular it must have all sides the same length and all interior angles the same.
3 +250= 253 take 253 dived it by 3 ,subtract 4 =80.3