Question

find the measure of marked angle a,b,c,d from the figure

Answer 1

Heya.... Here is ur answer
In the given ∆
We have Angle D as 80°
And angle B as 50°,
Let third angle be x
So by angle sum property
80°+50°+x=180°
130°+x=180°
X=50°
Now, we know EF||DB
So... Angle a =80°
Angle b=50°
And... Angle a +angle c=180°
80°+c=180°
c=100°
Again,
Angle b+ angle d=180°
50°+d=180°
d=130°
So... a=80 °
b=50°
c=100°
d=130°
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