M 1 M 2 180

Question: Definition of supplementary

Answer: m<1+m<2=180

<1 supplementary <2

Question: Definition of right angle

Answer: m<1=90

<1 is a right <

Question: Definition of congruence

Answer: <1≅<2

m<1=m<2

Question: Definition of complementary

Answer: <1 complementary <2

m<1+m<2=90

Question: Definition of right angle

Answer: <8 is a right angle.

segment BC ⊥ segment BA

Question: Definition of right angle

Answer: <ABC is a right angle.

m<ABC=90

Question: Transitive

Answer: <1≅<2

<2≅<3

<1≅<3

Question: Definition of segment bisector

Answer: segment BE bisects segment CF at E GIVEN

segment CE≅segment EF

Question: Definition of angle bisector

Answer: ray QR bisects <PQS

<PQR≅<RQS

Question: SAP

Answer: DC+CB=DB