An architect draws the incomplete picture of a house, as shown. He draws arcs at P and Q to construct a wall CD perpendicular to wall BC.

Three lines AB, BC and AD form an incomplete rectangle ABCD on three sides. There is a triangle on side AD of the incomplete rectangle to show the roof of the house. The fourth side CD has to be constructed to complete the architect’s picture of a house. A dotted CT is made. Two arcs intersect BC and CT and are equidistant from C.

Which statement best describes the next step of the construction?

Join the points D and C using a straightedge.

Question

An architect draws the incomplete picture of a house, as shown. He draws arcs at P and Q to construct a wall CD perpendicular to wall BC.

Three lines AB, BC and AD form an incomplete rectangle ABCD on three sides. There is a triangle on side AD of the incomplete rectangle to show the roof of the house. The fourth side CD has to be constructed to complete the architect’s picture of a house. A dotted CT is made. Two arcs intersect BC and CT and are equidistant from C. 

Which statement best describes the next step of the construction?

 Join the points D and C using a straightedge.

anonymous · Answer

Fix the compass at point T and draw an arc across QT.

anonymous · Answer

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