Question

find b along class 9 ​

Answer 1

Answer:

ஃ a) x = 60°

b) x = 60°

Step-by-step explanation:

a) x + x + x = 180° ( By angle sum property )

3x = 180°

$\sf x = \frac{180}{3} = 60°$

b) Exterior angle = Sum of interior angles

110° = 50° + x

x = 110° - 50° = 60°

In this sum we learnt:

• Angle sum property

• Exterior angle property

Answer 2

Answer:

a ) 60,60,60

b) x=60 and y=70

Step-by-step explanation:

all angles of a triangle is of 60 so that why or we can also say that x+x+x = 3x so 180/3 do x=60

b) abc is straight line =180 or we can also solve by exterior angle and angle sum properties

see exterior angle C= a+b

110 =x+50

110-50 =x

60=x

and 2nd we have to find by angles sum properties

A+B+C =180

60+50+X=180

110+X=180

X=180-110

X=70