Vocabulary consisting only from characters you are able to read
会
kai
(1)meeting, assembly, party, (2)association, club jlpt3
三角形の内角のはπである。
sankakukei no naikaku noha π dearu.
The sum of inner angles of a triangle is π.math
いつの間にか
icunomanika
before one knows, before one becomes aware of, unnoticed, unawaresjlpt3