What are the two types of triangles used in drafting?
A.
45 degree and 90 degree
B.
45 degree and 30 degree
C.
90 degree and 30 degree
D.
30 degree and 60 degree
Which of the following improved u.s. relations with china? a. the open door policy b. the boxer rebellion c. the burlingame treaty d. the chinese exclusion ac