Rift valleys are formed by tensional forces that pull the Earth's crust apart. This creates normal faults where the central block drops down between two parallel faults. The East African Rift Valley is a classic example of this process, where the African plate is slowly splitting apart.

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Zambia

• ivwananji siwale – 29 pts

• Distance of A Straight Line
• Mid-point of A Line
• Equation of a Straight Line
• Parallel and Perpendicular Lines
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