Q. 13.7( 22 Votes )
Construct Δ PQR, in which ∠Q =70°, ∠R = 80° and PQ+QR+PR=9.5cm
Given: ∠Q =70°,
∠R = 80° and
perimeter of Δ PQR
Steps of construction:
i: Draw a line segment XY of 9.5cm.
ii: From point X draw a ray XD at 70° and from Y draw a ray YE at 80°.
iii: Draw an angle bisector of X and Y, two angle bisectors intersect each other at point A.
iv: Draw a line bisector of XA and AY respectively these two-line bisectors intersect at point B and C.
v: Join AB and AC.
vi: Δ ABC is required triangle.
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