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ccswims

  • one year ago

Paul walks 25 feet away from his house and places a mirror on the ground. He backs 5 feet away from the mirror so that he can see the tip of the roof. Paul's eyes are 6 feet above the ground. Paul and the house are both perpendicular to the ground. The angles between the top of the house, the mirror, and the ground and between Paul's eyes, the mirror, and the ground are congruent as shown in the image:

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  1. ccswims
    • one year ago
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    Prove the triangles are similar.

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  2. campbell_st
    • one year ago
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    this is proven using the angle angle postulate since the house and paul are perpendicular to the ground, that means that the triangles contain 2 right angles and you are told 2 angles are congruent |dw:1439586144664:dw| if you know 2 angles are equal the 3rd angles will be equal by angle sum of a triangle

  3. ccswims
    • one year ago
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    omg thank you so much! How you get the two right angles make so much sense!

  4. campbell_st
    • one year ago
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    well the information uses the sentence.."Paul and the house are perpendicular to the ground"... meaning right angles

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