Question

in an isosceles triangle the angle at the base 45.find the angle opposite to the base.

Answer 1

hello friend!!

let the angles be;∠a.∠b.∠c.

base angle be=∠b.

∴,∠a+∠b+∠c=180degree

∠b=45 (base angle)

angle a +angle b+angle c=180

angle a+angle c=180-45.

angle a+ angle c=135

∵, one angle is also isoceles ∵∵, angle a=135-45=90.

there fore .

angle a-90.angle b=45,angle c=45.

hope it help!
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