If you could put more info ab this then i would understand what u want me to put
Answer:
122°
Step-by-step explanation:
The measure of the central angle is twice the measure of the inscribed angle that subtends the same arc.
∠ABC = 2×∠ADC = 2×61°
∠ABC = 122°
Without more information, I assume it's a square and it's w/l =6.5 cm
Infinite amount of solutions
See attached image
Comment for more help or if the image is too hard to see
Hope this helps :)