Answer:
60degrees
Step-by-step explanation:
Congruent means equal and equilateral triangle also means a triangle which has three sides equal.
So 60 degrees is the sides for each angle since when they are added they all add up to 180°
<AC=60°
<CB=60°
<AB=60°
60+60+60=180°
∆ABC=180°
64 cm
u just add each of the langht of the squar
x = 18
(whole secant) x (external part) = (whole secant) x (external part)
(6+x)6 = (8+10)* 8
6*(6+x) = 8(18)
Divide each side by 6
6+x = 8(18)/6
6+x = 8*3
6+x = 24
Subtract 6 from each side
6+x-6 =24-6
