The figure below shows a trapezoid, abcd, having side ab parallel to side dc. the diagonals ac and bd intersect at point o.

if the length of ao is double the length of co, the length of bo is

half of the length of ab
double the length of do
one-fourth the length of ac
equal to the length of ao

How can we find the measure of an exterior angle if we know the measurement of an interior angle

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

Evaluate the expression for the given value of the variable. ∣-4b-8∣+∣-1-b^2 ∣+2b^3 ; b=-2