Line AB intersects line CD at point F, with a ray FE forming a right angle EFB. What angle relationship best describes angles EFC and EFD?

Complementary angles
Congruent angles
Linear pair
Vertical angles

Which statement about the relative areas of ? abc and ? xyz is true? the area of ? abc > the area of ? xyz the area of ? abc < the area of ? xyz the area of ? abc = the area of ? xyz more information is needed to compare.

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?

Use circumcenter theorem to solve for the given values