Question

maths class 9 lesson 6 - lines and angles

Answer 1

Answer:

angle acb=180-(100+30) acc to angle sum property

angle acb=50

then angle acd = 180-50

that is 130 as it is straight line those angles form linear pair

plz mark me as brainliest and follow me

Answer 2

Answer:

in this figure..

angle A + angle B + angle C = 180°

30°+100°+x=180°

130°+x=180°

x=180°-130°

x=50°

as we know straight line makes 180° angle so.

y=180°-50°

y=130°

so your answer us 130°

hope it helps you...

mark it as brainliest...