The figure below shows parallel lines cut by a transversal: A pair of parallel lines is shown, cut by a transversal. Angle 3 is
located in the upper right exterior corner on the top line, and angle 4 is located in the lower left exterior corner of the bottom line. Which statement is true about ∠3 and ∠4? ∠3 and ∠4 are congruent because they are a pair of alternate exterior angles. ∠3 and ∠4 are complementary because they are a pair of alternate exterior angles. ∠3 and ∠4 are complementary because they are a pair of alternate interior angles. ∠3 and ∠4 are congruent because they are a pair of alternate interior angles. (100 points)
1 answer:
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Answer:
368 sq. units.
Step-by-step explanation:
We have a square of side lengths 20 units and we cut four congruent isosceles right triangles from the corners of the square.
Now, the four isosceles right triangles have one leg equal to 4 units.
Therefore, the area of four triangles = sq. units.
Now, we have the area of the given square is (20 × 20) = 400 sq. units.
Therefore, the area of the remaining octagon will be (400 - 32) = 368 sq. units. (Answer)