Tag: identifying angles

Questions Related to identifying angles

 $\displaystyle 89^{o}$ is an example of:

maths construction of angles identifying angles acute and obtuse angles types of angle

  1. obtuse angle

  2. acute angle

  3. right angle

  4. None of the above

Show answer
Correct Option: B
Explanation:
An angle with measure $=90^{o}$ is a right angle
An angle with measure $>90^{o}$ is an obtuse angle
An angle with measure $<90^{o}$ is an acute angle

Here, $89^o$ is less than $90^o$. 

Hence, it is an acute angle.

Straight angle measures _____.

maths construction of angles identifying angles acute and obtuse angles types of angle

  1. $\displaystyle 90^{o} $

  2. $\displaystyle 180^{o} $

  3. $\displaystyle 60^{o} $

  4. $\displaystyle 45^{o} $

Show answer
Correct Option: B
Explanation:

An straight angle always makes an angle of $ 180^o $.

Hence, the answer is $180^{o}$.

$\displaystyle 179^{o}$ is an example of:

maths construction of angles identifying angles acute and obtuse angles types of angle

  1. obtuse angle 

  2. acute angle

  3. right angle

  4. None of the above

Show answer
Correct Option: A
Explanation:
An angle with measure $=90^{o}$ is a right angle
An angle with measure $>90^{o}$ is an obtuse angle
An angle with measure $<90^{o}$ is an acute angle

Here, $179^o$ is greater than $90^o$ and less than $180^{o}$. 

Hence, it is an obtuse angle.

An angle which measures $\displaystyle 180^{o}$ is called:

maths construction of angles identifying angles acute and obtuse angles types of angle

  1. zero angle

  2. right angle

  3. straight angle

  4. acute angle

Show answer
Correct Option: C
Explanation:

An angle which measure $0^0$ is called zero angle.

An angle which measure more than $0^o$ and less than $90^o$ is an acute angle.
An angle which measures $90^o$ is called a right angle.

An angle which measure more than $90^o$ and less than $180^o$ is an obtuse angle.
An straight line makes the angle of $180^o$.
Hence, the answer is straight angle.