Question

20. Find the angles marked with a question mark shown in F
A
E
?
40°
?
?​

Answer 1

Answer:

B =50 because in angle b 40+90=50

D=45 because 90+x+x=180

2x=180-90

2x=90

X=90÷2

=45

Answer 2

Answer:

in triangle BCE

angle E = 90°

angle C= 40°

B= 180- 90+ 40 ( angle sum property of triangle)

180- 130

50°

angle D = angle B( in a parallelogram opp.angles are equal)

= 50°