Question

THESE ARE SOME QUESTIONS OF CLASS 7th NCERT BOOK CHAPTER (LINES AND ANGLES)

Answer 1

Answer:

QUESTION 1

SUPPLEMENTARY ANGLES IN

FIG17

ANGLES COA, AOD

AOD, DOB

COB, BOD

COA,DOA

FIG 18

ANGLES DBC, DBA

EBA, EBC

IN FIG22

ANGLE

2=180_65=115

3=180_115=65

4=180_65=115

IN FIG23

1. IF X=25

BOC=75

THEN 2Y+5=180_75=105

2Y=100

Y=50

2.IF Y=35

ANGLE AOC=2Y+5=75

3X=180_75=105

X=105/3=35

X=35

HOPE IT WILL HELP YOU