Question

(in) In an isosceles triangle, the vertex angle is half the base angle. (Take base angle be m in degrees and
remember sum of the angles of a triangle is 180 degrees.)
three times the marble Gopi has, Mohan has 25 marbles​

Answer 1

Step-by-step explanation:

Let the base angles be m ( base angles are equal in isosceles triangle)

Vertex angle= m/2

According to the question,

m+m+m/2= 180 (ASP)

➡️ 2m + m/2= 180

➡️ 5m/2= 180

➡️ 5m= 360

➡️ m= 72

So base angles are 72 degrees

and vertex angle is 1/2 x 72= 36 degrees

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