Estimate how many 12 inch rulers will be the sane leght as bike

the average bike is 70 inches, so it would be 5.8 feet long. so it would be longer then just using 5, 12 inch rulers. but not quiet 6 either. but if i had to pick i would go with 6.

b is 38 degrees.

a is 52 degrees.

this is because if b is 38 and a is 14 degrees more than b than 38+14=52 and 52+38=90 degrees. hope this .

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)