Tetragonal and orthorhombic crystal systems have same axial angles.

Explanation

To determine whether the statement "Tetragonal and orthorhombic crystal systems have the same axial angles" is true or false, we can analyze the characteristics of both crystal systems step by step.

### Step 1: Understand the Tetragonal Crystal System
- In the tetragonal crystal system, there are two equal edge lengths and one different edge length.
- The parameters can be represented as: a = b ≠ c.
- The angles in the tetragonal system are all right angles, meaning:
- α = 90°
- β = 90°
- γ = 90°

### Step 2: Understand the Orthorhombic Crystal System
- In the orthorhombic crystal system, all three edge lengths are different.
- The parameters can be represented as: a ≠ b ≠ c.
- Similar to the tetragonal system, the angles in the orthorhombic system are also right angles, meaning:
- α = 90°
- β = 90°
- γ = 90°

### Step 3: Compare the Axial Angles
- Both the tetragonal and orthorhombic crystal systems have the same axial angles:
- α = 90°, β = 90°, γ = 90° for both systems.

### Conclusion
Since both the tetragonal and orthorhombic systems have the same axial angles of 90 degrees, the statement is **true**.

### Final Answer
**True**: Tetragonal and orthorhombic crystal systems have the same axial angles.

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