No.
It is a near rhyme, but not a perfect rhyme.
No, "pen" and "bed" are not an approximate rhyme. An approximate rhyme is when words have a similar ending sound but are not a perfect match, such as "pen" and "pain."
No peg does not rhyme with pen but egg does..
No, pen and bed do not rhyme.
External rhyme is rhyme that happens on the "outside" of the poem. In other words, the words at the end of the lines rhyme.
"The Raven" by Edgar Allan Poe features end rhyme, internal rhyme, slant rhyme, and a consistent rhyme scheme (ABCBBB). "Stopping by Woods on a Snowy Evening" by Robert Frost contains end rhyme, internal rhyme, and a structured rhyme scheme (AABA). "The Waste Land" by T.S. Eliot utilizes slant rhyme, end rhyme, and internal rhyme throughout the poem, with varied rhyme schemes in each section.
The statement "Rhyme must always occur at the end of a line" is not true. Rhyme can occur at the end of lines (end rhyme) or within a single line (internal rhyme). Rhyme can also be less strict, such as slant rhyme or eye rhyme.
Thin,
Slant rhyme.
The opposite end to where the pen would write
Rhymes inside of a sentence are called internal rhymes (I saw it fade in the shade
end rhyme