Jason knows that ak←→⊥kb←→ , ak←→∥ef←→ , and ak←→∥cb←→ . which other facts can jason conclude are true? select each correct answer. m∠jfb=90° kb←→∥dm←→− kb←→⊥cb←→ m∠ejm=90°      select parallel, perpendicular, or cannot be determined to classify each  pair  of lines. be determinedqr←→  and  st←→st←→  and  qs←→rt←→  and  qr←→qs←→  and  rt←→

Part A

It is given that

AK⊥ KB

AK║EF

AK║CB

1.⇒∠AKB=∠JFB=90°Corresponding Angles, when lines are parallel corresponding Angles are equal.

3.

From (1),(2) and (3) we conclude that

 EF ⊥ KB

And ,CB⊥KB.

→Lines which are parallel and among one of them is perpendicular to a line, then all parallel lines will be perpendicular to that line.

Option (1) and (3)

Part(B)

QR and STParallel

ST and QSPerpendicular

RT and QRPerpendicular

QS and RTParallel

The anwsers are

1)   KB←→⊥CB←→

2) m∠JFB=90°

Step-by-step explanation:

m∠5 + m∠3 = m∠1   is true.

m∠5 + m∠6 = 180 is true

m∠2 +m∠3 = m∠6   is true

m∠2 +m∠3 +m∠5 = 180   is true