Cho tam giác ABC có 3 góc nhọn (AB a) chứng minh tứ giác BCEF, AEHF nội tiếp

In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4

State if the two triangles are congruent. if they are, state how you know?

Let hh represent the number of hummingbirds and ss represent the number of sunbirds that must pollinate the colony so it can survive until next year. 6h+4s > 746h+4s> 74 this year, 88 hummingbirds pollinated the colony. what is the least number of sunbirds that must pollinate the colony to ensure that it will survive until next year?