Question

correct answer please tell

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Answer 1

Answer:

Its from which chapter and which class dear.

Answer 2

Answer:

a) let angle 90 vertex be A

. from a two ray are going in opposite directions

.let one ray be x, let another ray be y

. angle A = 180° ( it is linear pair of angles)

step 1 : 90+x=180

steo2 : x=180-90

step3 : x=90

b) let tha Quadrileteral be ABCD

here A =x, B =90, C =60, D =80

stp1 : In Quadrileteral sum of all angles are 360°

stp2 : angle A+B+C+D =360

stp3 : x+90+60+80 =360

stp4 : x+ 230=360

stp5 : x= 360-230

stp6 : x = 130

For answer C, D I will send later please wait