Question

solve step by steap.... plz help ​

Answer 1

Answer:

Triangle BAD is a right angle triangle

given:

angle B=55°

angle D=90°

let angle A =x

55+90+x=180

145+x=180

x=180-145

x=35°

so angle A= 35°

Step-by-step explanation:

it will help you..

Answer 2

Answer:

in triangle ABC,

AB=BC

angle ABC =angle ACB( if opposite sides are equal then opposite angles are equal)

angleABC=angle ACB=55°

angle ABC+angle ACB+angle BAC=180°(angle sum property)

55°+55°+angle BAC=180°

110°+angle BAC=180°

angle BAC=180°-110°=70°

Therefore, angle BAD=angle BAC/2=70°/2=35°

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