oblique angle
Definition
Noun: An angle that is not a right angle (90 degrees) or a multiple of a right angle (e.g., 180, 270 degrees). It is any angle that is not exactly 0°, 90°, 180°, 270°, or 360°.
Usage
The term "oblique angle" is used in geometry to classify and describe angles. It specifies that an angle is neither a right angle nor a straight angle (or their multiples), meaning it is acute (less than 90°) or obtuse (greater than 90° but less than 180°).
Examples
- The triangle contained two oblique angles and one right angle.
- In the diagram, lines AB and CD intersect at an oblique angle.
- Most road junctions meet at oblique angles rather than perfect right angles.
Advanced Usage
- Oblique Triangle: A triangle that does not contain a right angle. All three of its interior angles are oblique angles.
- Example: Solving an oblique triangle often requires using the Law of Sines or the Law of Cosines.
Variants and Related Words
- Oblique (Adjective): Slanting; not straight, direct, or perpendicular.
- Example: The satellite captured an oblique photograph of the city from a sharp angle.
- Acute Angle: An oblique angle that is less than 90 degrees.
- Obtuse Angle: An oblique angle that is greater than 90 degrees but less than 180 degrees.
Synonyms
- Non-right angle
- Slant angle
Antonyms
- Right angle
- Perpendicular angle
- Straight angle (180°)
Noun
-
an angle that is not a right angle or a multiple of a right angle
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