Question

One of the angle of an isoscles triangle is 30° find the other two angle

Answer 1

hey mate!!

here is your answer:

two angles of an isoscles triangle are equal
if one angle is 30 degree then let other angle be x .

so, x+x+30=180 (angle sum property)
2x+30=180
2x=180-30
2x=150
x=150/2
x=75

other two angles are 75 and 75

hope it helepd!

Answer 2

Answer:

In an isoscles triangle two sides are equal

so their opposite angles are also equal

Consider a isoscles triangle ABC

So, AB = AC

hence angle B = C

in traingle, sum of all angles is 180

so A+B+C=180

30+B+B=180

2B = 180-30

2B = 150

B =75

Hence B = C = 75