Question

solve Q.3.........full .....

Answer 1

(a)

Exterior angle is the sum of the opposite interior angles

x = 60 + 78 = 138º

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(b)

Vertically Opposite angles are equal

a = 30º

Sum of angles in a triangle is 180º

b = 180 - 30 - 68 = 82º

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(c)

Sum of angles in a triangle is 180º

m = 180 - 83 - 75 = 22º

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(d)

Sum of angles in a triangle is 180º

y = 180 - 45 - 37 = 98º

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(e)

Angles of an equilateral triangle is 60º

x = 60º

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(f)

Base angles of the isosceles triangle are equal

x = 75º

Sum of angles in a triangle is 180º

y = 180 - 75 - 75 = 30º

Answer 2

1.EXTERNAL ANGLE THEOREM
x=60+78=138.
2. a=30 (vertically opp. angles)
b=180-(68+30) = 180 - 98= 82.
c=180-(83+75)= 180-158=28.
d=180-(37+45)=98.
e.here all angle are equal as it is a equilateral triangle and hence x= 180/3= 60
f.here it is a isosceles triangle so x= 75 and
y=180-(75+75)= 130.
HOPE IT WORK.
MARK BRAINLIEST ANSWER