Find the value of x in the figure

25°

Step-by-step explanation:

from the triangle on the left, angles BAD and BDA are equal

angles in a triangle add up to 180°

so 180 - 80 = 100 /2 = 50°

now the straight line ADC angle is 180°

so 180° - 50° = 130 ° for angle BDC

the angle for x is the same as angle DBC

for the triangle on the right angles must add up to 180°

180 - 130 = 2x

50 = 2x

25° =x

its adding 5.5 each time

step-by-step explanation: