S.chand publication New Learning Composite mathematics solution of class 7 Chapter 11 Congruence of Triangles Exercise 11G

 Exercise 11G

Construct the following triangles calculate the third angle in each triangle and measure this angle to check the accuracy of your construction

Question 1

ΔABC in which AB=7.4 cm, ∠BAC=47° , ∠ABC=68°

Sol :

Question 2

ΔPQR in which PQ=6 cm, ∠Q=50°, ∠P=60°

Sol :

Question 3

ΔXYZ in which YZ=5.8 cm, ∠Y=100°, ∠Z=40°. Draw the perpendicular from Y to XZ

Sol :

Question 4

ΔBCD in which ∠B=105° , BC=8.2 cm, ∠C=45°

Sol :

Question 5

Draw ΔFGH in which ∠G=80° , ∠H=55° and GH=5.6 cm. Draw the perpendicular bisector of side GH

Sol :