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bagirrra123 [75]
3 years ago
10

the angles of a quadrilateral measure 80°,100°,100°and 80° in this order. what kind of quadrilateral has this shape? how do u kn

ow
History
1 answer:
kozerog [31]3 years ago
3 0
The shape would be a trapezoid, because trapezoids always have two sets of equivalent angles, while others don't. Like squares and rectangles have all 90 degree angles.
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Answer:

The Transformation of the World

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Now imagine earlier generations during their childhood years. How did they move from place to place? How did they communicate? What foods did they eat?

At one time, humans, fueled by the animals and plants they ate and the wood they burned, or aided by their domesticated animals, provided most of the energy in use. Windmills and waterwheels captured some extra energy, but there was little in reserve. All life operated within the fairly immediate flow of energy from the Sun to Earth.

Everything changed during the Industrial Revolution, which began around 1750. People found an extra source of energy with an incredible capacity for work. That source was fossil fuels — coal, oil, and natural gas, though coal led the way — formed underground from the remains of plants and animals from much earlier geologic times. When these fuels were burned, they released energy, originally from the Sun, that had been stored for hundreds of millions of years.

Coal was formed when huge trees from the Carboniferous period (345– 280 million years ago) fell and were covered with water, so that oxygen and bacteria could not decay them. Instead, the pressure of the weight of materials above them compressed them into dark, carbonic, ignitable rock.

Most of the Earth’s oil and gas formed over a hundred million years ago from tiny animal skeletons and plant matter that fell to the bottom of seas or were buried in sediment. This organic matter was compacted by the weight of water and soil. Coal, oil, and gas, despite their relative abundance, are not evenly distributed on Earth; some places have much more than others, due to geographic factors and the diverse ecosystems that existed long ago.

Early Steam Engines

The story of the Industrial Revolution begins on the small island of Great Britain. By the early 18th century, people there had used up most of their trees for building houses and ships and for cooking and heating. In their search for something else to burn, they turned to the hunks of black stone (coal) that they found near the surface of the earth. Soon they were digging deeper to mine it. Their coal mines filled with water that needed to be removed; horses pulling up bucketfuls proved slow going.

Explanation:

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3 years ago
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V125BC [204]

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Explanation:

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2 years ago
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Days after the attacks, Bush demanded that the Taliban government in Afghanistan turn over Osama Bin Laden and shut down Al-Qaeda training camps.

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How does the Constitution's Article I ban on ex post facto laws protect people?<br><br><br> pls help
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The constitution actually uses the phrase ex post facto law in Article 1 Section 10 Clause 1.

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