TEST 03

TEST 

 1.   What is the difference between axioms and postulates ?

2.  In ∆PQR, ∠R = ∠P, QR = 4 cm. and PR = 5 cm.  Find the length of the side PQ.( 1 × 2 = 2)

3.  Prove that two lines cannot have more than one point in common.

4.  Three angles of a quadrilateral are 70⁰, 80⁰ and 100⁰.  Find its fourth angle.                                                                        ( 2 × 2 = 4)

5.  If D is the midpoint of the hypotenuse AC of a right angled ∆ABC, prove that BD = .                                              ( 3 × 2 = 6)

6.  D, E and F are the mid points of the sides of an equilateral ∆ABC, then prove that ∆DEF is also an equilateral triangle.