class - 7 Math - Ratio & Proportion

                           MY DIGITAL GURUKUL

                                  Class - VII

                            Math ( Ratio & Proportion ) 

F. M.- 20                                                                Time - 1h 

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 1. Fill in the blanks.   (10)

         a)A triangle whose one angle is more than 90˚ is called __________. 

         b)A triangle whose all sides are of different length is called _________. 

         c) A triangle whose three angles are 60 degree are called_________.   

        d) The sum of  lengths of two sides of a triangle is always _______than third side. 

        e) An exterior angle and the adjacent interior angle form a ________. 

        f)  A triangle can not have more than one ________ angle 

       g) In a right angled triangle the side opposite to the right angle is called ________.

       h) The sum of all the angles of a triangle is _________.

       i) The sum of  lengths of the sides of a triangle is called its _______. 

       j) Height ²  +  Base ²  =  ____________.

2.  Find the value of x, if the angle of a triangle have measures ( x + 40 ), (2x + 20) and

      3x . Also, state Which type of triangle is this.     (3) 

3.  The angles of a triangle are in the ratio 1 : 2 : 3. Find all the three angles of the

      triangle.     (3)

4.  If one angle of a triangle is 110 degree and the other two angles are in the ratio 2: 3.

      Find the angles.    (2)

5.  .A man goes 12 m due west and then 9 m due north. How far is he from the

       starting point?      (2)

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