# Naming Rays and Identifying the Starting Point in Fig. 2.5

**URL:** <https://sorumatik.co/t/naming-rays-and-identifying-the-starting-point-in-fig-2-5/666789>\
**Category:** Maths Question\
**Created:** [Haziran 17, 2026, 2:18ös UTC](https://sorumatik.co/t/naming-rays-and-identifying-the-starting-point-in-fig-2-5/666789 "2026-06-17T14:18:59Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Qr48ywz6q2](https://sorumatik.co/letter_avatar_proxy/v4/letter/q/71e660/32.png) [@Qr48ywz6q2](https://sorumatik.co/u/Qr48ywz6q2)\
**Post date:** [Haziran 17, 2026, 2:18ös UTC](https://sorumatik.co/t/naming-rays-and-identifying-the-starting-point-in-fig-2-5/666789/1 "2026-06-17T14:18:59Z")

</div>

Fig. 2.4  
Namne

the rays shown in Fig. 2.5. Is T the starting po\int of eachan

these rays?  
co  
Fig. 2.5

 ![Soru Görseli](https://sorumatik.co/uploads/default/original/3X/c/1/c17db5ca4998c353e0334e718765749149170102.jpeg)

---

<div class="post-metadata">

**Author:** ![Egitim\_Danismani](https://sorumatik.co/user_avatar/sorumatik.co/egitim_danismani/32/86791_2.png) [@Egitim\_Danismani](https://sorumatik.co/u/Egitim_Danismani)\
**Post date:** [Haziran 17, 2026, 2:19ös UTC](https://sorumatik.co/t/naming-rays-and-identifying-the-starting-point-in-fig-2-5/666789/2 "2026-06-17T14:19:04Z")

</div>

## Naming Rays and Identifying the Starting Point in Fig. 2.5

💡 **[RULE / FORMULA USED:]**  
A **ray** is a part of a line that has one fixed starting point (called the **initial point** or **origin** ) and extends infinitely in one direction. When naming a ray, the first letter must be the starting point, and the second letter is any other point on the ray (e.g., \vec{TA}).

🧠 **[SOLUTION STEPS:]**

**Step 1 — Identify the Rays in the Figure**  
By looking at **Fig. 2.5** , we see lines starting from point T and passing through other points. An arrow indicates the direction of infinite extension.

- The first ray starts at T and passes through A. This is ray \vec{TA}.
- The second ray starts at T and passes through N and B. This can be named ray \vec{TN} or ray \vec{TB} (they represent the same ray).

**Step 2 — Determine the Starting Point**  
Observe the point where the lines originate without an arrow. Both lines originate from the vertex labeled T.

- For ray \vec{TA}, the starting point is T.
- For ray \vec{TN} (or \vec{TB}), the starting point is T.

**Step 3 — Conclusion**  
Since both rays originate from the same vertex T before extending towards their respective directions, T is indeed the starting point for each.

━━━━━━━━━━━━━━━━━━━━━━━━━━━  
✅ **[ANSWER:]**

1. The rays shown are **Ray \vec{TA}** and **Ray \vec{TB}** (or \vec{TN}).
2. **Yes** , T is the starting point of each of these rays.  
━━━━━━━━━━━━━━━━━━━━━━━━━━━

🎯 **[KEY CONCEPTS:]**

**1. Ray**

- **[Definition:]** A geometric figure with one endpoint that extends forever in one direction.
- **[In this problem:]** We identified two rays (\vec{TA}, \vec{TB}) sharing a common endpoint.

**2. Starting Point (Initial Point)**

- **[Definition:]** The point where a ray begins.
- **[In this problem:]** Point T serves as the origin for both rays forming the angle.

⚠ **[COMMON MISTAKES:]**

**❌ Naming the ray in reverse**

- **[Wrong:]** Naming the ray as \vec{AT} or \vec{BT}.
- **[Right:]** \vec{TA} and \vec{TB}.
- **[Why it’s wrong:]** In geometry, the first letter of a ray **must** be its starting point. \vec{AT} would mean the ray starts at A and goes toward T, which is the opposite of the figure.

Would you like me to explain the difference between a ray, a line segment, and a line using this figure?