What are anti-dive and anti-squat suspension geometry and how do they work?

Anti-dive and anti-squat are suspension geometry features that reduce pitch during braking and acceleration respectively. Anti-dive positions front suspension links so braking forces create an upward component, countering nose dive. Anti-squat positions rear suspension so acceleration forces lift the rear. The percentage of anti-dive/squat is calculated from the geometry and affects pitch control, ride quality, and suspension stroke usage. Typically 20-50% anti-dive and 30-70% anti-squat are used.