Suppose BD is congruent to CA and AB is congruent to CD. Can you use the SSS Postulate or the SAS Postulate to prove ABD is congruent to DCA?

a. both apply
b. by SSS only
c. by SAS only
b. neither apply

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality