Where exactly, did Moshe sprinkle the blood?
Rashi: He placed it directly on to the four Keranos of the Mizbe'ach ha'Olah with his finger.
What was the "Y'sod ha'Mizbe'ach"?
Rashi: The bottom Amah of the Mizbe'ach protruded one Amah from the Mizbe'ach most of the way around. 1
With the exception of the south and east sides (which did not have a Y'sod), except for one Amah of each on the south-west and the north-east, respectively), which did.
What are the connotations of the word "ha'Mizbe'ach regarding both the Keranos and the Y'sod?
Refer to 27:1:3:1**.
Seeing as the Par ha'Chatas came to atone for the sin of the Golden Calf (See Rashi on Pasuk 1), and like the Par He'elam Davar