What facts are required in order to conclude that m∠ade = m∠abc?

a)ad = db and ae = ec
b) ab = de and ac = bc
c) de = 2 •(bc), ad = 2 •(ab), and ae = 2 •(ac)
d) the exterior angle of a triangle is equal to the sum of the two remote interior angles.

What do you have to do is add a bda & of what you got busy and then times it by two

Rounding decimals is very similar to rounding other numbers. if the hundredths and thousandths places of a decimal is forty-nine or less, they are dropped and the tenths place does not change. for example, rounding 0.843 to the nearest tenth would give 0.8. , your welcome !