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g100num [7]
3 years ago
13

What is the area of triangle DEF

Mathematics
2 answers:
Rainbow [258]3 years ago
6 0

Answer: 588 centimeters

Lunna [17]3 years ago
3 0

Answer:

C: 588 square centimeters

Step-by-step explanation:

A= 1/2(b)(h)

base: 42

height: 28

A = 1/2(42)(28)

A = 1/2(1176)

A = 588

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ELEN [110]

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7 0
2 years ago
∡C and ∡D are supplementary angles. If m∡D is nine less than twice m∡C, find m∡D.
Gala2k [10]

Answer:

D is 117

Step-by-step explanation:

Let the measure of angle C be x

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x + 2x - 9 = 180

3x = 180 + 9

x = 189/3

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D = 2x-9= 2(63) -9 = 126 -9 = 117

6 0
3 years ago
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