Test: Geometry- 2 - Class 4 MCQ

Angles between 0 and 90 degrees (0°< θ <90°) are called acute angles. Angles between 90 and 180 degrees (90°< θ <180°) are known as obtuse angles.

The angle of a straight angle is usually 180°. Whenever two rays join together they form an angle.

Clock shape is a complete angle.

90 degrees constitute a right angle. 

A point is an exact location in space. A point is denoted by a dot. A point has no size.

The inside of an angle is called interior angle. 

The outside of an angle is called exterior angle. 

• A ray starts at a single fixed point (called the endpoint) and extends infinitely in one direction.
• It has one endpoint and no limit in the other direction.

Thus, a ray has one endpoint.

An obtuse angle is a type of angle whose degree measurement is more than 90° but less than 180°. Examples of obtuse angles are: 100°, 120°, 140°, 160°, 170°, etc.

The flag post is always perpendicular to the ground.