Given that lines l and m are parallel, which of the statements must be true? ∠ 1 ≅ ∠ 2 ∠ 6 ≅ ∠ 2 ∠ 1 ≅ ∠ 8 ∠ 3 ≅ ∠ 5 ∠ 4 and ∠ 6 are supplementary ∠ 5 and ∠ 2 are supplementary

are you referring to matrix mathematics!

within these regions are all the major types of biomes in the world. a biome is a community of animals and plants spreading over an extensive area with a relatively uniform climate. some diverse biomes represented in north america include desert, grassland, tundra, and coral reefs.