Construct ΔPQR if PQ = 5 cm, m RPQ = 150o and m QRP= 40o .

Here,

According to the question,


In ΔPQR,


Using angle sum property of triangle,


RPQ = 180 – (PQR + QRP)


= 180 – (105 + 40)


= 180 – 145


RPQ = 35°


We have to draw figure using following steps of construction:


Step 1: Draw a line segment PQ of 5 cm



Step 2: Now, from point P draw a ray PX making an angle of 35° from PQ.



Step 3: From Q, draw a ray QY from PQ making 105° angle. and intersecting PX at R



Step 4: The ray QY will intersect with PX at point R. Hence ΔABC is the required triangle.



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