Step-by-step Answer:
To prove
Triangle ADC is congruent to triangle BDC
AC=BC (given)
DC=DC (common)
AD=BD (given CD bisects AB)
Therefore triangle ACD is congruent to BDC (justification: SSS)
Answer:
1) GCF(12,32) = 4
2) lcm(12, 32) = 96
3) GCF 6,12,21 = 3
4) LCm 6,12,21 = 84
I think the answer should be 20
Answer: B for the picture and 52 for the question
Step-by-step explanation: