geometry chapter 2

lines,rays, or segments that intersect at right angles

no

If angles are supplementary to the same angle they are congruent

If 2 <'s are supplementary to congruent <'s they are congruent

If 2 <'s are complementary to the same < they are congruent

If <'s are compl. to congruent <'s they are congruent

If a segment is added to two conguent segments the sums are congruent- same for angles

If congruent segments are added to congruent segments the results are congruent- same for angles

If a segment is subtracted from congruent segments the differences are congruent- same for angles

If congruent segments are subtracted from congruent segments the differences are congruent- same for angles

if segments( or angles ) are congruent their like multiples are congruent

If segments (or angles) are congruent their like divisions are congruent

if <'s(or segments) are congruent to the same < (segment) they are congruent to each other

If segments(or angles) are congruent to congruent <'s(or segments) they are congruent to each other

• 1) share a common endpoint
• 2) are collinear
• 3) extend in different(opposite) directions

2 <'s are vertical <'s when the rays forming the sides of one vertical < are opposite rays to those forming the sides of the other vertical <# this means when 2 lines intersect 2 pairs of vertical <'s are formed

verrtical <'s are congruent