In a right triangle ABC with right angled C, height CD and bisector CF are drawn; let DK and DL be bisectors in triangles BDC and ADC . Prove that CLFK is a square.

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

Which statement about perfect cubes is true

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?