Question

classify the following angles :30°,90°,120°,60°,170°.
please find it it is angles​

Answer 1

Answer:

(i) A 30-degree angle is an acute angle. An acute angle is one in which the measure of the angle is less than 90 degrees. ... When a 60-degree angle is bisected we get two angles, each measuring 30 degrees.

(ii) In geometry and trigonometry, a right angle is an angle of exactly 90° (degrees), corresponding to a quarter turn. If a ray is placed so that its endpoint is on a line and the adjacent angles are equal, then they are right angles.

(iii) Obtuse Angle Measure = (180 - acute angle measure) In the picture above, line segment DO intersects line segment OQ at point O and forms an angle DOQ measuring 120°. Thus, it is an obtuse angle.

(iv) An angle whose measure is more than 0° but less than 90° is called an acute angle. Angles measuring 30°, 40°, 60° are all acute angles. Therefore a 60-degree angle is known as an acute angle.

(v) 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. Therefore, it is a obtuse angle.

Hope it helps you... Then please mark me as a BRAINLIEST if you find my answer helpful for you.

Answer 2

Classification of angles is done based on measure of degree.

Step-by-step explanation:

An angle is formed when 2 rays originate from the same originating point. Such rays make an angle which are called the arms of the angle and their originating point is called the vertex of the angle.

Angles can be classified based on magnitude of degree angle:

• Zero angle

Zero angle is formed when both arms of angles are at the same position. Rays operating from the same point form zero angle.

• Acute angle

Acute angle is the measure of angle which is greater than $0^{o}$ but less than $90^{o}$.

• Right angle

Right angle is the angle that measures exactly $90^{o}$.

• Obtuse angle

Obtuse angle is the measure of angle which is greater than $90^{o}$ but less than $180^{o}$.

• Straight angle

Straight angle is the measure of angle that is exactly $180^{o}$.

• Reflex angle

Reflex angle is the measure of angle which is greater than $180^{o}$ but less than $360^{o}$.

• Complete angle

Complete angle is the measure of angle that is exactly $360^{o}$.

$30^{o}$ is an acute angle.

$90^{o}$ is a right angle.

$120^{o}$ is an obtuse angle.

$60^{o}$ is an acute angle.

$170^{o}$ is an obtuse angle.