# NCERT Mathematics Class 9 Exemplar Ch 11 Constructions Part 4

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**Exercise 11.4**

Q.1. A triangle if its perimeter is 10.4 cm and two angles are and

Q.2. A triangle PQR given that, and

Q.3. A right triangle when one side is and sum of other sides and the hypotenuse is

Q.4. An equilateral triangle if its altitude is

Q.5. A rhombus whose diagonals are and in lengths.