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Q.3 Examine whether you can construct ?DEF such that EF = 7.2 cm, m\(\angle \)E = 110° and m\(\angle \)F = 80°. Justify your answer.
Answer :

To construct \(\triangle \)DEF with the given measurement, is not possible.
\(\therefore m\angle E + m\angle F = 110° + 80°\)
= 190° > 180° [Sum of the angles of a triangle = 180°]
\(\therefore \triangle \)DEF is not possible to construct.