a transversal is a line that intersects two or more lines. When two or more lines are cut by a transversal, the angles which occupy the same relative position are called corresponding angles
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AIDS in Africa: causes for the high spread of the HIV virus
The reasons for the high level of AIDS spread in sub-Saharan Africa are manifold. The most common causes include: Poverty: About half of the world's people living in extreme poverty live in sub-Saharan Africa.