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SAI International School
CLASS – VII
Mathematics
Chapter-10: Practical Geometry – 3
Home Assignment – 3
SUBTOPIC: Constructing a Triangle using ASA and RHS criterion
1. Draw a line L. Draw a perpendicular to L at any point on L. On this perpendicular choose
a point X, 4 cm away from l. Through X, draw a line m parallel to L.
2. Construct ΔABC such that AB = 2.5 cm, BC = 6 cm and AC = 6.5 cm. Measure ∠B.
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3. Construct ΔDEF such that DE = 5 cm, DF = 3 cm and m∠EDF = 90 .
4. Examine whether you can construct ΔDEF such that EF = 7.2 cm, m∠E = 110° and
m∠F = 80°. Justify your answer.
5. Construct the Construct the right angled ΔPQR, where m∠Q = 90°, QR = 8cm and
PR = 10 cm.