Answer:
9)
- [tex]BN[/tex]⊥[tex]AD[/tex]---------Given
- ∠[tex]1[/tex] and ∠[tex]2[/tex] are right angles----------------definition of perpendicular lines
10)
- PT bisects AY-----------------------------Given
- AR≅RY---------------------------------------definition of segment bisector
11)
- OS bisects ∠CSW--------------------given
- ∠CSO≅∠WSO-------------------------definition of angle bisector
Step-by-step explanation:
9) Given, [tex]BN[/tex]⊥[tex]AD[/tex]
⇒∠[tex]1[/tex] and ∠[tex]2[/tex] are right angles (definition of perpendicular lines)
10) Given, [tex]PT[/tex] bisects [tex]AY[/tex]
⇒[tex]AR[/tex]≅[tex]RY[/tex] (definition of segment bisector)
11) Given, [tex]OS[/tex] bisects ∠[tex]CSW[/tex]
⇒∠[tex]CSO[/tex]≅∠[tex]WSO[/tex] (definition of angle bisector)
