Diego rivera's economic/political preference was for what

In the diagram, which must be true for point d to be anorthocenter? o be, cf, and ag are angle bisectors.be 1 ac, ag 1 bc, and cf 1 ab.be bisects ac, cf bisects ab, and ag bisects bc.be is a perpendicular bisector of ac, cf is aperpendicular bisector of ab, and ag is a perpendicularbisector of bc.

Ineed with 6-20! my teacher didnt really explain

Which verb correctly completes this sentence? manuel el número de teléfono de césar. a. conoce b. conoce a c. sabe d. sé