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Answer

First diagram shows  1 and 2 vertical angles

Explanation

From the all four diagrams,we get the diagram first shows the vertically opposite angles.  

angle 1 and angle 2 are vertically opposite angles

vertically opposite angles are equal in measurements. when two lines are intersect each other form four angles, out of this four angles two pairs of vertically opposite  angles are there.

All other figures  angle 1 and 2 shows adjacent angles.

In diagram 1 angle 1 and angle 2 are vertical angles.

Further Explanation:

Vertical angles can be defined as the angles that are opposite to each other if two lines cross each other.

Acute angles are those angles in which the measurement of the angle is less than [tex]{90^\circ}[/tex] .

Explanation:

In diagram 1 angle 1 and angle 2 are vertical opposite angles because the angles are opposite to each other.

In diagram 2 angle 1 and angle 2 are not vertical angles because the angles are opposite to each other.

In diagram 3 angle 1 and angle 2 are not vertical angles are not vertical angles because the angles are opposite to each other.

In diagram 4 angle 1 and angle 2 are not vertical angles are not vertical angles because the angles are opposite to each other.

Hence, in diagram 1 angle 1 and angle 2 are vertical angles.

Learn more:

1. Learn more about inverse of the function https://brainly.com/question/1632445.

2. Learn more about equation of circle brainly.com/question/1506955.

3. Learn more about range and domain of the function https://brainly.com/question/3412497

Answer details:

Grade: Middle School

Subject: Mathematics

Chapter: Angles

Keywords: vertical angle, opposite angle, angles, alternate angles, linear pair, corresponding angles.

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