CBSE BOARD X, asked by costaantonieta561, 3 days ago

Find x + y + z and Find x + y + z + w.​

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Answers

Answered by CutieChimmy
1

Explanation:

(a)

x+90=180(linear pair)

/x=90

z+30=180(straight angle)\

z=180-30

/z=150

30+90=y(exterior angle prop.)

/y=120

x+y+z

=120+150+90

=360

(b)

mark angle 1.

1+120+80+60=360(angle sum prop.)

1=360-260

1=100

w+100=180-------1

z+60=180---------2

y+80=180---------3

x+120=180--------4

From 1,2,3,4:

x+y+z+w

=60+100+120+80

=360

Answered by costaantonieta076
1

Answer:

1. 360 2. 360

Explanation:

a.) In ABC

z + ABC = 180°

z + 30° = 180°

z = 180° - 30°= 150°

z = 150°

In ABC, A + B + C = 180°

90° + 30° + C = 180°

120° + C = 180°

C = 180° - 120° = 60°

ACB + y = 180°

60° + y = 180°

y = 180° - 60° = 120°

y = 120°

BAC + x = 180°

90° + x = 180°

x = 180° - 90° = 90°

x = 90°

y = 120°

z = 150°

x + y + z = 90° + 120° + 150°

= 360°

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