author: clement vavasor durell

... Hex . ACC'PB'B shows 0 , M , N are collinear ; sim . O , N , L are collinear . 18. T is pole of QR ; TQ , TR meet AP in H , K ; TA meets QR in M. Polars of A , T meet in P , so P is pole of AT ; so { PM , QR } = −1 = ( T ) { PA , HK } ...

... series of equal parallel straight lines . Suppose AB is one of these lines , then the vector AB represents this velocity , and will be denoted by the symbol AB in order to avoid confusion between the two ideas , the length of AB and the ...