You have 30 matchsticks. You want to build a triangle with those matchsticks. The number of different triangles can you build is

Can you have a triangle with two acute angles?

Can you have a triangle with two obtuse angles?

Can you have a triangle with two right angles?

Can you draw a triangle which has: exactly three lines of symmetry?

Can you draw a triangle which has: exactly one line of symmetry?

Try to construct triangles using match sticks.Some are shown here.Can you make a triangle with 6 match sticks. (Remember you have to use all the available match sticks in each). Name the type of triangle in each case.If you cannot make a triangle,think of reasons for it.