Question

The vertical angle of an is Osceola triangle is 100°. Find it'd base angles.

Answer 1

Answer:

40°

Step-by-step explanation:

In an isosceles triangle, two angles will be equal.

Given that vertical angle is 100°

let it  be A.

And ∠B =∠C=x° ( base angles)

in a triangle sum of  the angles is equal to 180°

∴100 +2x = 180 ⇒ 2x=80⇒x=40°

Answer 2

Step-by-step explanation:

As we know that isosceles triangle has two sides equal and one different side.

Therefore any two angles will be equal and one will be different from each other.

By using angle sum property sum of three angles in a triangle is 180.

let the unknown angles be x

angle sum property:

x+x+100=180

2x+100=180

2x=180-100

2x=80

x=80/2

x=40