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Question 20
Identify the area of the polygon with vertices B (3, 2), C (7,-2), D (2,-4), and E (1, -2).
A = 19 units2
A = 17 units2
A = 30 units
A = 18 units2

Respuesta :

sqdancefan

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Answer:

  (d)  A = 18 units²

Step-by-step explanation:

Line CE can be considered to be the base of two triangles. It is 6 units long. The upper triangle is 4 units high, and the lower triangle is 2 units high. The formula for the area of a triangle is ...

  A = 1/2bh

Then the sum of the areas of the two triangles is ...

  A = 1/2(6)(4) +1/2(6)(2) = 12 +6 = 18

The area of the polygon is 18 square units.

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