Question

Page Find the value of the unknown in the giren figures.

Answer 1

Answer:

a) since two sides of triangle are equal then one portion of this whole triangle is isosceles triangle

therefore base angles of isosceles triangle are equal

x+x+30=180(angle sum property of a triangle)

2x+30=180

2x=150

x=75

now, by linear pair property,

180-x=angle at the middle of two triangle

180-75=105

2nd portion is also isosceles triangle

y+y+105=180

2y=75

y=37.5

x=75,y=37.5