Let's solve the given question step-by-step:
A right angle is one of the fundamental types of angles. By definition, a right angle is an angle that measures exactly 90 degrees.
1. Consider the Given Choices:
- [tex]\(180^{\circ}\)[/tex]
- [tex]\(360^{\circ}\)[/tex]
- [tex]\(90^{\circ}\)[/tex]
- [tex]\(45^{\circ}\)[/tex]
2. Identify What We Know About Right Angles:
- A right angle forms when two lines intersect to create an "L" shape.
- It is exactly 90 degrees, neither more nor less.
3. Review Each Option:
- [tex]\(180^{\circ}\)[/tex]: This is a straight angle, which is a straight line or half of a full circle.
- [tex]\(360^{\circ}\)[/tex]: This represents a full rotation or the total degrees in a circle.
- [tex]\(90^{\circ}\)[/tex]: This is precisely the measure of a right angle.
- [tex]\(45^{\circ}\)[/tex]: This is half of a right angle, forming a smaller angle known as an acute angle.
4. Answer Selection:
- Based on the definitions and the review, the correct answer is [tex]\(90^{\circ}\)[/tex].
Therefore, a right angle has [tex]\(90^{\circ}\)[/tex].
