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Mrac [35]
2 years ago
8

D(5,7), E4, 3), and 18, 2) form the vertices of a triangle. What is m_DEF?

Mathematics
1 answer:
dolphi86 [110]2 years ago
5 0

Answer:

D.90°

explanation:

I hope it help

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IrinaK [193]

Answer:

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Trapezoid QRST has two right angles. A 5-in.altitude can be drawn dividing QRDT into a rectangle and an isosceles right triangle
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Answer:

The area of the trapezoid is 57.5 square inches

Step-by-step explanation:

we know that

The trapezoid QRST can be divided into a rectangle QRDT and an isosceles right triangle RSD

see the attached figure to better understand the problem

step 1

The area of rectangle is given by the formula

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we have

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QR=9\ in

substitute

A=((9)(5)=45\ in^2

step 2

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substitute

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step 3

Adds the areas

A=45+12.5=57.5\ in^2

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