Заполните пропуски словами, используя изученный лексический материал
1)Perpendicular means at____angle to another line or plane
2)Triangles have three____
3)Squares have____sides and their sides are____
4)Tranles, squares and rectangles have____sides

найти глаголы be и have и подписать время и число

1)  Then
he attended the University of Cambridge and graduated from it in 1854.

2)  At that time students could not even have such
subjects as electricity or magnetism as there was no laboratory for the study
of these subjects.

3)  His most outstanding investigations, however,
are in the field of the kinetic theory of gases and electricity.

4)  It is in every object large or small; but
large objects, such as earth, have a stronger pull than small ones.

5)  Although the bigger object has the stronger
attraction, all objects, in fact, have some attraction too but we do
not notice the gravitational pull of a book because the pull of the earth is
very much greater.

6)  It was said that gravitation was the force
which held all the atoms of a star together.