Northeastern china, north korea, south korea, northern japan all have coniferous forests, temperature grasslands, agricultural and are located in a humid continental climate zone. true or false

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

Drag and drop a statement or reason to each box to complete the proof. statement reason △abc , de⎯⎯⎯⎯⎯∥ac⎯⎯⎯⎯⎯ given corresponding angles postulate △bde∼△bac babd=bcbe polygon similarity postulate ba=bd+dabc=be+ec bd+dabd=be+ecbe substitution property of equality bdbd+dabd=bebe+ecbe addition of fractions 1+dabd=1+ecbe simplify. dabd=ecbe subtraction property of equality

How did the europeans design the national borders of africa? why?