his Greek mathematician was known for his work in geometry and physics. The Greek army used two of his inventions: the catapult and the mirror system. Egyptians later used a screw system that bears my name to irrigate the Nile River Valley. Who am I?

The segments shown below could form a triangle.

The princes of europe believed that they were no longer obligated to remain under the authority of the church. the idea of another christian church, one outside of the pope's authority, had financial appeal as well. many european leaders began to seize church property and place it under the authority of the state. based on the text, why did another christian church appeal to european princes? it would allow them to make religious decisions. it would give them authority over people. it would allow them to expand their lands. it would allow them to influence the pope.

Which of the following two groups did not do battle with the romans? select all that apply.