Question

CLASS - 7
MATHS
TWO STRAIGHT LINES AB AND CD INTERSECT AT A POINT 'O'. IN ANGLAOC = 42 DEGREE FIND THE MEASURE OF EACH OF THE FOLLOWING ANGLES
ANGLE AOD
ANGLE BOD
ANGLE COB

Answer 1

angle aod =180°-42°=122°(adjacent angle property)
angle bod=42°{vert.opp angle)
angle cob =122° (vert.opp angle)

Answer 2

hey mate
here's ur answer

as lines AB and CD intersect at O
it forms 2 pairs of vertucally opposite angles
and vertically opposite angles are always equal

so angle AOC=angle BOD
angle BOD=42°

Angle AOD and angle BOC are equal
so,
360°-84°=angle AOD+angle BOC
276°=2angleAOD
138°= angle AOD
angle BOC=138°


angle BOD =42°
angle AOD=138°
angle BOC=138°

hope it helps :)