Summer is considered a closed syllable. In a closed syllable, the vowel is followed by a consonant, which prevents it from being a long vowel sound. In the word "summer," the vowel "u" is followed by the consonant "m," making it a closed syllable.
Closed
Paper is a closed syllable word.
Both open syllables.
Both closed.
It is a closed syllable.
Photo is an open syllable word.
It is an open syllable.
First syllable closed, second syllable open.
Closed
Closed
The second syllable is open, the first is closed.
Paper is a closed syllable word.
Both open syllables.
Both closed.
It's a closed syllable.
It's a closed syllable.
Swim is a closed syllable.