Why is “temperate” and “date” slant rhyme?

The other pair of words in lines 2 and 4 -'temperate' and 'date'- on the other hand, do not appear to rhyme at all. This is due to the fact that there are different types of rhymes, the most common of which we detail below.

1.the hosts on two opposing mountains stood,  

2.thick as the foliage of the waving wood;  

3.between them an extensive valley lay,  

4.o'er which the gleaming armour pour'd the day,  

5.when from the camp of the philistine foes,

6. dreadful to view, a mighty warrior rose; in the dire deeds of bleeding battle skill'd,

owen made and ideal hero because he had all the gret aspects of a good superhero