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Which quadrilaterals have diagonals that are always perpendicular to each other?
answered
Aug 29, 2021
Mathematics
high-school
4
votes
140k
views
Define a greenhouse gas. A. Greenhouse gases allow visible light to pass through and warm the Earth's surface, and prevent heat energy from radiating back out into space. B. Greenhouse gases allow visible
answered
May 19, 2021
Geography
college
7
votes
72.4k
views
What is the author's viewpoint? The United States went to war in 1917. The United States won the war. The war created a new illusion.
answered
Feb 16, 2021
History
middle-school
4
votes
89.8k
views
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