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Big Ideas Math Integrated I, 2016

BI

Big Ideas Math Integrated I, 2016 View details

1-3. Quiz

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Exercise 2 Page 518

Lines that intersect at a right angle are perpendicular.

FG

Practice makes perfect

Let's extend the line that passes through points E and F, EF.

Because cubes are made of squares, the edges all meet at right angles. Lines that intersect at a right angle are perpendicular.

From the figure, we can see that there are four perpendicular lines: AE, BF, EH and FG. However, only FG contains point G, so that is our answer.

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Exercises p.518