The following portion of a flow diagram shows that the expression ab + cd is equivalent to the expression dc + ba.

fill in each circle with the appropriate symbol: either c+ (for the commutative property of addition) or cx (for the commutative property of multiplication).

a. ax, cx, a+

b. ax, ax, a+

c. cx, cx, c+

d. c+, c+, cx

Danny draws a transversal, t, on two parallel lines ab and cd, as shown below: he makes the following table to prove that the alternate interior angles are equal: which is the missing justification? (6 points) corresponding angles formed by a transversal on parallel lines are supplementary. corresponding angles formed by a transversal on parallel lines are congruent. co-interior angles formed by a transversal on parallel lines are congruent. co-exterior angles formed by a transversal on parallel lines are congruent.

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

For what is the measure of the angle at the top of the shed? a. multiplication of areas b. squaring of areas c. addition of areas d. division of areas