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.

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 45^@,64^@ and 72^@ ? Give reasons for your answer.

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

How many excircles can be drawn for a triangle ?

How many triangles can be drawn through n points on a circle ?

How many triangles can be drawn through n points on a circle ?

Can we form a quadrilateral whose angles are 70^(@), 115^(@), 60^(@) and 120^(@) ? Give reasons for your answer.

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