Question

plz answer me question no. 10​

Answer 1

Let the base angle be x°

Therefore, vertex angle A= (30+x)°

By angle sum property,

(x)+(x)+(30+x)=180

3x=150

x= 50

Therefore the angles of the triangle are 50,50 and 80

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Answer 2

Answer:

Let the base angles of the isoseles triangle be x

Then the vertex angle be (x+30)

As we know that sum of angles of a triangle is 180 degree

A/Q (According to Question)

=> x+x+x-30 =180

=>3x-30 =180

=>3x =180 - 30

=>x =150/3

=>x =50

Base angles= 50 degree (Each)

Vertex angle= (50+30)= 80 degree