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Big Ideas Math Integrated I, 2016

BI

Big Ideas Math Integrated I, 2016 View details

3. Postulates and Diagrams

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Exercise 31 Page 464

If the three planes intersect at a point it means they coincide at that point.

Yes
Explanation: See solution.

Practice makes perfect

Two intersecting planes will always intersect in a line.

When we introduce a third plane, we can position it so that the three planes intersect at a point.

Therefore, your friend is correct.

Subchapter links

Communicate Your Answer p.459

Monitoring Progress p.461-462

Exercises p.463-464