Answer:
40 degrees
Step-by-step explanation:
so in order to find this we first off know that every triangle's inside angles are equal to 180 degrees total.
so if we take that <A is equal to 90 degrees
then we see that the outside of <C is equal to 130 and line BCD is a confirmed straight line
then each line is equal to 180 degrees so we subtract 130 from 180 in order to find the inside angle of C so that would equal 50
so now that we know <A=90
and <C=50
then we add those two together and that equals 140 degrees
and so there is only one more angle which is <Z
so we subtract 140 from the total amount of 180 degrees in the triangle
leaving us with <Z=40 degrees
