How do you know that: Segment addition postulate j k D C B A Segment AB + segment BC = segment AC?

How do you know that: Def linear pair j k D C B A Angle 1 + angle 8 = 180

Write as a biconditional: A polygon is an octagon iff it has 8 sides. An octagon is a polygon with 8 sides.

How do you know that: Def linear pair j k D C B A Angle 5 is supp to angle 6

How do you know that: given j k D C B A Line j is // to line k?

D OR I Segment DI Segment OR is congruent to __________.

How do you know that: Vertical angle thm j k D C B A Angle 7 is congruent to angle 1

List all pairs of: 1 & 4, 8 & j k D C B A SSE angles

How do you know that: Vertical angle thm j k D C B A Angle 4 is congruent to angle 6

Give another name for: Segment BA j k D C B A Segment AB

Give another name for: Ray AC j k D C B A Ray AB

How do you know that: // lines  Alt Ext angles are congruent j k D C B A Angle 8 is congruent to angle 4

D OR I Is supplementary to Angle D ____________ angle O.

Give another name for: Angle 8, angle DCB, angle ACD, and angle BCD j k D C B A Angle DCA

Write as a biconditional: 2 angles are congruent iff they have the same measure. Congruent angles have the same measure.

List all pairs of: 1 & 32 & 45 & 78 & j k D C B A Corresponding angles

How do you know that: // lines  Corresponding angles are congruent j k D C B A Angle 8 is congruent to angle 6

List all pairs of: 7 & 36 & j k D C B A Alt int angles

How do you know that: Vertical angle thm j k D C B A Angle 8 is congruent to angle 2?

Write as a biconditional: 2 angles form a linear pair iff they are both adjacent and supplementary. A linear pair is formed by 2 angles that are both adjacent and supplementary.

D OR I Is congruent to Angle D ____________ angle R.

List all pairs of: 7 & 63 & j k D C B A SSI angles

List all pairs of: 1 & 7, 8 & 2, 6 & 4,5 & j k D C B A vertical angles

D OR I Segment IR Segment DO is congruent to __________.