Respuesta :
3 can be anything greater than (but not equal to) 90 and 1 can be anything less than (but not equal to) 90 as long as angle 3 + angle 1 = 180 degrees.
"The value of [tex]\angle1 +\angle3[/tex] lies between [tex]90^{\circ} < \angle1+\angle3< 180^{\circ}[/tex].
Given,
[tex]\angle 1,\angle2, \angle3[/tex] have the following relationships.
- [tex]\angle 1[/tex] and[tex]\angle2[/tex] are acute vertical angles.
- [tex]\angle 3[/tex] is an obtuse angle adjacent to both [tex]\angle 1[/tex] and [tex]\angle 2[/tex].
We have to find the sum of measure of [tex]\angle1[/tex] and the measure of [tex]\angle3[/tex].
Angle sum property:
We know that the angle sum property of triangle states that the sum of all angles of a triangle is equal to [tex]180 ^{\circ}[/tex].
[tex]\angle 1+\angle 2+\angle3= 180^ {\circ}[/tex]
[tex]\angle1+\angle3= 180-\angle2[/tex]
So, the value [tex]\angle1 and \angle3[/tex] is always greater than [tex]90{^\circ}[/tex] because [tex]\angle 3[/tex] is the obtuse angle and it is being added to [tex]\angle1[/tex],
so it is always greater than right angle and less than [tex]180^{\circ}[/tex].
Hence the value of [tex]\angle1 +\angle3[/tex] lies between [tex]90^{\circ} < \angle1+\angle3< 180^{\circ}[/tex].
For more details on angle sum property follow the link:
https://brainly.com/question/4316040