28 дм2 сколько будет дм. ?

Build the sentences from the words:
a) Is, best, she, friend, my.
b) Learn, different, students, our, subjects.
c) The, is, Russia, the, in, country, largest, world.
d) In, the, we, city, live, a, flat, in, of, center, the.
e) Reading, is, my, of, best, son's, fond, friend.

какие углы можно построить чертежными угольниками