[" (a) rhombus "],[" If "ABC" is an arc of a circle and "/_ABC=135^(@)" ,then the ratio of are "widehat AC],[" ircumference,is "]

If ABC is an arc of a circle and /_ABC=135^(@), then the ratio of arc ABC to the circumference is :

If ABC is an arc of a circle and /_ABC=135^(0), then the ratio of arc widehat ABC to circumference is 1:4 (b) 3:4(c)3:8(d)1:2

ABCD is a rhombus with /_ABC = 56^(@) , then /_ACD is equal to:

ABCD is a rhombus with /_ABC=56^(@). Determine /_ACD.

ABCD is a rhombus with /_ABC = 56^(@) , then /_ACD is equal to:

In Figure,ABCD is a rhombus with /_ABC=56^(@). Determine /_ACD

Triangle ABC is inscribed in a circle, such that AC is a diameter of the circle and angle BAC is 45^@ . If the area of triangle ABC is 72 square units, how larger is the area of the circle than the area of triangle ABC ?

ABC is an isoscles triangle in which AB =AC. If O be the centre of the circle and angle OBC=30^(@) then the value of angle ABC is ________