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3 years ago

A triangle has an area of 56 square units it's height is 14 units

Mathematics

1 answer:

kobusy [5.1K]3 years ago

7 0

The formula for the area of a triangle is 1/2*b*h=a.
1/2*b*14=56
b*14=112
b=8

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xxTIMURxx [149]

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You can check the PNG attached as well.

Step-by-step explanation:

You need to represent the symmetry of every given points respet to the line

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In that case, the line beeing paralell to the x- axis, x- value of the symmetry is the same of the given point and y = 2 is the middle between both points.

Point A(1, 1)

$x_{A} = 1\\ x_{A'} = 1 \\\\\frac{y_{A} +y_{A'} }{2} =2\\y_{A'} = 4 - y_{A} = 4 - 1 = 3$

Point B(-3, 0)

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$x_{C} = 1\\ x_{C'} = 1 \\\\\frac{y_{C} +y_{C'} }{2} =2\\y_{C'} = 4 - y_{C} = 4 - 4 = 0$

Point D(-2, -1)

$x_{D} = 1\\ x_{D'} = 1 \\\\\frac{y_{D} +y_{D'} }{2} =2\\y_{D'} = 4 - y_{D} = 4 - (-1) = 4 + 1 = 5$

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2 does not equal 0.125
Final answer: Not equivalent

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