The verb to learn is a regular verb.
Irregular
Ir- can be a prefix for regular: irregular.
irregular
To write is an irregular verb.
yes
No they do not. You're required to learn the past tense forms of irregular verbs unlike regular verbs where they end in -ed.
It is irregular.
Pentagons can be regular or irregular.
regular or irregular
It is irregular.
To learn how to use them in their past forms.
A pentagon can be regular or irregular.
It is an irregular polygon.
Irregular.
Irregular
irregular
It is a 12 sided shape that can be either regular or irregular