An angle of measure `140^@` is

Options

A. Acute angle
B. Obtuse angle
C. Straight line angle
D. Complete angle

Answer

To determine the type of angle that measures 140 degrees, we can follow these steps:

### Step 1: Understand the Types of Angles
- **Acute Angle**: An angle that measures less than 90 degrees.
- **Obtuse Angle**: An angle that measures greater than 90 degrees but less than 180 degrees.
- **Straight Angle**: An angle that measures exactly 180 degrees.
- **Complete Angle**: An angle that measures exactly 360 degrees.

### Step 2: Analyze the Given Angle
- We are given an angle that measures **140 degrees**.

### Step 3: Compare the Given Angle with Angle Types
- **Check if it is Acute**:
- Since 140 degrees is greater than 90 degrees, it cannot be an acute angle.

- **Check if it is Obtuse**:
- 140 degrees is greater than 90 degrees and less than 180 degrees, so it fits the definition of an obtuse angle.

- **Check if it is Straight**:
- 140 degrees is not equal to 180 degrees, so it is not a straight angle.

- **Check if it is Complete**:
- 140 degrees is not equal to 360 degrees, so it is not a complete angle.

### Step 4: Conclusion
- Since 140 degrees is greater than 90 degrees and less than 180 degrees, it is classified as an **obtuse angle**.

### Final Answer
An angle of measure 140 degrees is an **obtuse angle**.

---