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Chapter 1: Q26 (page 20)

Study a corner of your classroom where two walls and the ceiling meet. How many right angles can you see at the corner?

Short Answer

Expert verified

There are three right angles at the corner.

Step by step solution

01

Step 1. Draw a diagram representing walls and ceiling.

02

Step 2. Apply the definition of right angle.

When two lines are perpendicular to each other, at intersection they form an angle which measures exactly 90 degree is called right angle.

03

Step 3. Description of step.

From the figure It can be observed that, there are total three right angles at a corner where two walls and ceiling meet, that is, first with two walls, second with first wall and ceiling and third with second wall and ceiling.

Therefore, there are 3 right angles at the corner.

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Most popular questions from this chapter

Sketch and label the figures described. Use dashes for hidden parts.

The horizontal plane Q and vertical plane N intersect.

Classify each statement as true or false.

A, B, C, and D are coplanar.

State whether it is possible for the figure described to exist. Write yes or no.

Two points lie in a plane X, two other points lie in a different plane Y, and the four points are coplanar but not collinear.

PointsA andB are known to lie in a plane.

  1. What can you say about AB鈫�?
  2. State the postulate that supports your answer to part (a).

Postulate 6 is sometimes stated as 鈥淭wo points determine a line.鈥�

Do three points determine a line?
See all solutions

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