Respuesta :

Answer:88

Step-by-step explanation:

angle a is 39 because it is a isosceles triangle so that means that angle b is 180-(39x2)=180-78=102 and we know that triangle BED is isosceles and 102+32=134 and so angle b is 180-134=46 and that is the same with angle D so angle E is 180- (46x2)=88

aditrishindaghatta

Answer:

Angle E is 88°

Step-by-step explanation:

  1. Because of base angle theorem m<A will also be 39° degrees.
  2. All angles of a triangle = 180°. Making m<B 102°.
  3. Now we know that the angle of a straight angle is also 180°
  4. So 102°  + 32° + m<B = 180°
  5. Making m<B 46°
  6. We know the BE = DE, making it an Isoceles triangle.
  7. Making m<D 46° as well
  8. 46°+46° = 92°
  9. 180°-92° = 88°

Angle E is 88°  

Hope this helps

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