As shown? Known ABC△ delta? 10AB？ AC？ Centimeter? 8BC? Centimeter? Point d is the midpoint of AB? 1? If point P moves from point B to point C at a speed of 3 cm/s on the BC line? At the same time, point q moves from point c to point a.

(1) If the speed of point Q is equal to the speed of point P? 1 sec later? Are BPD△ and CQP△ the same? If the moving speeds of point Q and point P are not equal, please explain the reason (2)? What is the speed of point Q? Can BPD△ and CQP△ be congruent? Known: AB⊥BD,? ED⊥BD？ AC=CE，？ BC=DE. 1 try to guess the positional relationship between AC and CE? And prove your conclusion. 2 What happens if you translate △ECD in the direction of CB? Other conditions remain unchanged. Conclusion? 1? Is it still valid now? Please provide a justification for the answer. 3 If the CD is translated in the CB direction, what is the following? Other conditions remain unchanged. Is the conclusion still valid? Please provide a justification for the answer. 4 If the CD is translated along the CB direction, what is the following? Other conditions remain unchanged. Is the conclusion still valid? Please explain why. If the CD is translated in CB direction, what happens below? Other conditions remain unchanged. Is the conclusion still valid? Please explain the reason.