Question

Construct APQR if PQ-5 cm, mzPQR - 105° and mZQRP 40°. Write steps of construction

with diegram​

Answer 1

Step-by-step explanation:

In order to construct ΔPQR, the measure of ∠RPQ has to be calculated.

According to the angle sum property of triangles,

∠PQR + ∠PRQ + ∠RPQ = 180º

105º + 40º + ∠RPQ = 180º

145º + ∠RPQ = 180º

∠RPQ = 180° − 145° = 35°

The steps of construction are as follows.

1) Draw a line segment PQ of length 5 cm.

2) At P, draw a ray PX making an angle of 35º with PQ.

3) At point Q, draw a ray QY making an angle of 105º with PQ.

4) Point R has to lie on both the rays, PX and QY. Therefore, R is the point of intersection of these two rays.

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