Question

Find the value of x in each question

Answer 1

Answer:

Step-by-step explanation:

iii.

in triangle ABC

angle (A+B+C)=180

angle(50+90+30)=180(angle sum property )

C=40

in triangle DEC

angle(D+C+E)=180

angle(x+40+85)=180

x=55

iv.

angle ABE= angle ABC =180(linear pair)

105 +angle ABC = 180

angle ABC = 75

in triangle ABC

angle (ABC+ BAC )=angle ACD(exterior angle)

ABC+x=120

75+x=120

x=45