Please anwer these with brief explanation ..
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Sum of interior angles of a triangle is 180 degrees.
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1. as it is isosceles triangle,
x=y
sum of triangle is 180
x+y+70=180
x+x+70=180
2x. =110
x. =55
therefore, x=y=55
2.as it's an isosceles triangle
y=50
sum of triangle is 180
(180-x) +50+50=180
180-x. =80
x. =100
there fore x=100 and y=50
3. y=30(v.o.a)
as its an isosceles triangle
30+30+x=180
x. =120
therefore, x=120 and y=30
similarly you can make other three....
x=y
sum of triangle is 180
x+y+70=180
x+x+70=180
2x. =110
x. =55
therefore, x=y=55
2.as it's an isosceles triangle
y=50
sum of triangle is 180
(180-x) +50+50=180
180-x. =80
x. =100
there fore x=100 and y=50
3. y=30(v.o.a)
as its an isosceles triangle
30+30+x=180
x. =120
therefore, x=120 and y=30
similarly you can make other three....
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