![\boxed{\large{\bold{\blue{ANSWER~:) }}}}](https://img.qammunity.org/2022/formulas/mathematics/high-school/8n8ylc0yu6d8813ztog5sqhox8lk1m8z1n.png)
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![sentence:-](https://img.qammunity.org/2022/formulas/mathematics/college/mmddqcn2nmmql21mk0h1s6gnegnnvu0qcb.png)
If two lines intersect, then the vertical angles formed are equal.
1) If the vertical angles are not equal, then lines do not intersect.
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![\sf{it is CONTRAPOSITIVE}](https://img.qammunity.org/2022/formulas/mathematics/college/iwkrqn2z1uxz0fpupgaz4wk4ngdcl87olv.png)
2) If the two lines do not intersect, then the vertical angles are not equal.
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![\sf{it is INVERSE}](https://img.qammunity.org/2022/formulas/mathematics/college/ea73scxkdwnwz98fbfaq5m1en60v13nhj8.png)
3) If the vertical angles are equal, then the two lines intersect.
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![\sf{it is CONVERSE}](https://img.qammunity.org/2022/formulas/mathematics/college/rklvade2u9pokxg3emtrxh9j6x16f5bwud.png)