Step-by-step explanation:
Well we know that ZACB=LABC because
AABC is isosceles, so base angles theorem applies.
m<ACB=70°
So mzDCE=m/DEC-35° because of base angles theorem, and because mzDCE=m/ACB-m<ECB=70°-35°
Finally, DE || CB because the alternate interior angles ECB=<DEC
Answer:
I think it's 7.93725
I'm not sure if I did this correctly
Answer:
53
Step-by-step explanation:
Because
Cut only to ends of the triangle off then it will have a pentagon with the uncut shape
Im not sure about this one but it could be 12x+75y+21 and b+3+6c / disclaimer may be wrong. have a good day!
