triangles questions

Triangle questions       class V

Fill in the blanks

1.  Acute angle is …………………… 90^o

2.   Obtuse angle is …………………….90^o

3.  Straight line measures…………………….

4.   Equilateral triangle is always………………………….(acute/obtuse)

5.    Other angles of Right triangle is never…………….…………….(acute/obtuse)

6.    Every angle of an equilateral triangle is……………………

Which triangles are feasible?

1.     1Sides – 6cm, 7cm, 1cm

2.     2Sides 6cm,3cm,2cm

3.     3Angles- 80^o, 70^o, 40^o

4.     4Angles – 170^o, 6^o, 4^o

Solve

1.     One angle of a right triangle is 30^o. Find the other angles.

2.     One of the equal angles of an isosceles triangle is 40. Find all the angles.

3.     The unequal angle of an isosceles triangle is 30. Find the other angles.

4.     Two angles of a triangle are 80 and 20. Find the third angle.

5.     Find the Angles of an isosceles right triangle.

6.     How many triangles are in the figure? In how many ways can the marked angle be named?              

     

                     

7.   Name the   a. vertices    b. sides

c. obtuse angles       d. acute angles. 

solutions in the next post


http://manishieducare.blogspot.com/2013/12/triangles-solution.html

7.