Tag: identifying angles

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

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

  1. obtuse angle

  2. acute angle

  3. right angle

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

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

  1. obtuse angle

  2. acute angle

  3. right angle

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

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

  1. zero angle

  2. right angle

  3. straight angle

  4. acute angle
Reveal answer Fill a bubble to check yourself
C Correct answer
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.