Let's do this question what is the maximum number of abuse angles that a quadrilateral can have?
Remember, an obtuse angle is an angle which is greater than 90 degrees and less than 180 degrees.
All right.
What was the video?
Give it a thought and then let's do it together.
All right.
We're back.
I hope you've given it a try.
Now, remember, obtuse angle means greater than 90 and less than 180 degrees.
Well, how many do you think can a quadrilateral have now?
A cardinal can have a minimum of zero obtuse angles and a maximum of three obtuse angles.
Let's see that with an example.
Could we make some space over here?
All right, now, over here, you have a quadrilateral with one, two, three, three obtuse angles.
Now, when and you say that the number of obtuse angles is zero.
Let's take an example.
You have a rectangle, for example.
All right.
In case of a rectangle, every angle is equal to 90 degrees.
We have seen that for 90 plus 90 plus 90 plus 90 gives you 360.
And we have seen that the angle some of offer quadrilateral.
Has to be 360 degrees right now, all year.
Let's check the maximum now, if I want an abuse angle, I have to increase these angles, right, so
I can increase this angle, this angle and this angle about 90.
But because I have to maintain the same as constant, this has to be constant, therefore, or compensating
for this increase, I have to decrease this one.
Therefore, the maximum number of abuse angles that I can get is equal to three.