Answer:
21
Step-by-step explanation:
21 should be added in 123 to be a perfect square,i.e,
12^2=144
144-123
21
<span>Since the opposite angles are supplementary, an isosceles trapezium is a cyclic quadrilateral. Thus, ABCD is a rectangle as each internal angle is 90°. 8. If the non-parallel sides of a trapezium are equal, prove that it is cyclic.
</span>
I'm thinking its 4 to the 12 power but I am not completely sure on this
Answer:
it's B I think
I hope I am correct but I really think it's B
vvvvsdvsdvdvdvvsdvsdvxcvdfvAnswer:
dsvfdsggfsg
Step-by-step explanation: