Eric must prove that the base angles of an isosceles triangle are congruent. He draws a line segment that connects the midpoint of the base to the opposite vertex. Which postulate may be used to prove the angle congruence?

the answer is b.)

< 1=< 2

72 is the answer to this problem

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents