Maths 1 Mark Question

North and north-east directions form an angle of 45°, which is an acute angle.

An acute angle measures between 0° and 90°. An obtuse angle measures between 90° and 180°. A straight angle measures 180°. A right angle measures 90°. A zero angle measures 0° and a complete angle measures 360°.
145° is an obtuse angle.

Complete angle, as it is equal to 360°.

An acute angle measures between 0° and 90°. An obtuse angle measures between 90° and 180°. A straight angle measures 180°. A right angle measures 90°. A zero angle measures 0° and a complete angle measures 360°.30° is an acute angle.

Acute angle, as it measures between 0° and 90°.

Right angle, as it is equal to 90°.

An acute angle measures between 0° and 90°. An obtuse angle measures between 90° and 180°. A straight angle measures 180°. A right angle measures 90°. A zero angle measures 0° and a complete angle measures 360°.
179° is an obtuse angle.

3. The vertex of an angle lies on it.

Solution:

This is the only correct statement.

Angle formed by two adjacent fingers will appear as an acute angle.

An acute angle measures between 0° and 90°. An obtuse angle measures between 90° and 180°. A straight angle measures 180°. A right angle measures 90°. A zero angle measures 0° and a complete angle measures 360°.75° is an acute angle.

An acute angle measures between 0° and 90°. An obtuse angle measures between 90° and 180°. A straight angle measures 180°. A right angle measures 90°. A zero angle measures 0° and a complete angle measures 360°.90.5° is an obtuse angle.

An acute angle measures between 0° and 90°. An obtuse angle measures between 90° and 180°. A straight angle measures 180°. A right angle measures 90°. A zero angle measures 0° and a complete angle measures 360°.
89.5° is an acute angle.

An acute angle measures between 0° and 90°. An obtuse angle measures between 90° and 180°. A straight angle measures 180°. A right angle measures 90°. A zero angle measures 0° and a complete angle measures 360°.
360° is a complete angle.

An acute angle measures between 0° and 90°. An obtuse angle measures between 90° and 180°. A straight angle measures 180°. A right angle measures 90°. A zero angle measures 0° and a complete angle measures 360°.
165° is an obtuse angle.

East and North directions form an angle of 90°, which is a right angle.

An acute angle measures between 0° and 90°. An obtuse angle measures between 90° and 180°. A straight angle measures 180°. A right angle measures 90°. A zero angle measures 0° and a complete angle measures 360°.
0° is a zero angle.

An acute angle measures between 0° and 90°. An obtuse angle measures between 90° and 180°. A straight angle measures 180°. A right angle measures 90°. A zero angle measures 0° and a complete angle measures 360°.
118° is an obtuse angle.

Straight angle, as it is equal to 180°.

East and west directions form an angle of 180°, which is a straight angle.

An acute angle measures between 0° and 90°. An obtuse angle measures between 90° and 180°. A straight angle measures 180°. A right angle measures 90°. A zero angle measures 0° and a complete angle measures 360°.
90° is a right angle.

An acute angle measures between 0° and 90°. An obtuse angle measures between 90° and 180°. A straight angle measures 180°. A right angle measures 90°. A zero angle measures 0° and a complete angle measures 360°.
180° is a straight angle.

North and south-east directions form an angle of 135°, which is an obtuse angle.

An acute angle measures between 0° and 90°. An obtuse angle measures between 90° and 180°. A straight angle measures 180°. A right angle measures 90°. A zero angle measures 0° and a complete angle measures 360°.
29° is an acute angle.

Obtuse angle, as it measures between 90° and 180°.