Answer + Step-by-step explanation:
1) D be the symmetric of B with respect to C then CD = BC
A the symmetric of C with respect to B then AB = BC
We obtain :
CD = BC
AB = BC
Then AB = CD
2) m∠SBA = 180 - SBC = 180 - SCB = m∠SCD
3) we have :
BA = CD
BS = CS
m∠SBA = m∠SCD
Then
the triangles SBA and SCD are congruent
4)
the triangles SBA and SCD are congruent Then SA = SD
Therefore SAD is an isosceles triangle.
given: s is the midpoint of rt
definition of midpoint: rs st
given: st xg
transitive property of congruence: rs xy

Sorry that's all i know
<h3>that is in my answer</h3>
<h2>#carryonlearning:-D</h2>
Answer:
16
Step-by-step explanation:
4(x - 1)2 + 3y
12-4+2+6
8+2+6
10+6
16 i think