12.5 cm because the radius is half of the distance imbetween a circle
Answer:
All of the above
Step-by-step explanation:
ALL of the above quadrilaterals have all these characteristics.
Answer:
48
Step-by-step explanation:
Since it's a right angle, it's automadically 90 degrees so you just have to add 23+ 19 and subtract from 90.
23 + 19 = 42
90 - 42 = 48