Given: Angle 1 and angle 3 are vertical angles. Prove: angle 1 = angle 3 Choices:
(May be used more that once)
A) Definition of Supplementary
B) Definition of Linear Pair
C) Angle Congruence Postulate
D) Linear Pair Postulate
E) Substitution Property of Equality
F) Given
G) Subtraction Property of Equality

If chord ab is congruent to chord cd, then what must be true about ef and eg?

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

Kelli swam upstream for some distance in a hour.she then swam downstream the same river for the same distance in only 6 minutes.if the river flows at 5km/hr, how fast can kelli swim in still water?