Can a triangle have all angles less than `60^(@)`? Given reason for your answer.

How many triangles can be drawn having its angles as 53^@,64^@ and 63^@ ? Give reason for your answer.

How many triangles can be drawn having its angles as 53^(@), 64^(@) and 63^(@) ? Give reason for your answer.

Is it true to say that, if in two triangles, an angle of one triangle is equal to an angle of another triangle and two sides of one triangle are proportional to the two sides of the other triangle, then the triangles are similar? Give reason for your answer.

Is it true to say that, if in two triangles, an angle of one triangle is equal to an angle of another triangle and two sides of one triangle are proportional to the two sides of the other triangle, then the triangles are similar? Give reason for your answer.

Can a triangle have two obtuse angles ? Give reason for your answer.

Can a triangle have two obtuse angles ? Give reason for your answer.

How many triangles can be drawn having its angles as 45^@,64^@ and 72^@ ? Give reasons for your answer.

How many triangles can be drawn having its angles as 45^(@), 64^(@) and 72^(@) ? Give reason for your answer.

How many triangles can be drawn having its angles as 45^(@), 64^(@) and 72^(@) ? Give reason for your answer.

How many triangles can be drawn having its angles as 53^(@) , 64^(@) and 63^(@) ? Give reason for your answer.