Identify the shapes that make up each pattern in the sequence.

Problem Analysis:

The task involves identifying which shapes were used to create the patterns shown in each row. The shapes available for selection are:
- Square (□)
- Ellipse (Ellipse symbol)
- Triangle (△)
- Circle (○)
- Rectangle (▭)
- Pentagon (pentagon symbol)

We need to analyze each pattern and determine which shapes are present.

---

Solution:

#### Row 1:
Pattern:

- The pattern consists of a square (□) and a triangle (△).
- No other shapes are present.

Shapes used:
- Square (□)
- Triangle (△)

Answer for Row 1:
Tick: □, △

---

#### Row 2:
Pattern:

- The pattern consists of a circle (○) and a rectangle (▭).
- No other shapes are present.

Shapes used:
- Circle (○)
- Rectangle (▭)

Answer for Row 2:
Tick: ○, ▭

---

#### Row 3:
Pattern:

- The pattern consists of a square (□), a small square (□), and a triangle (△).
- No other shapes are present.

Shapes used:
- Square (□)
- Triangle (△)

Answer for Row 3:
Tick: □, △

---

Final Answer:

1. Tick: □, △
2. Tick: ○, ▭
3. Tick: □, △

Boxed Answer:
\[
\boxed{\text{1. □, △; 2. ○, ▭; 3. □, △}}
\]