M is the center of the circle.
Perhaps
M is the center of the circle.
Perhaps \( AB=CD \)
Which figure shows the radius of a circle?
Which diagram shows a circle with a point marked in the circle and not on the circle?
Is it possible that the circumference of a circle is 8 meters and its diameter is 4 meters?
M is the center of the circle.
Perhaps \( MF=MC \)
M is the center of the circle.
Perhaps
CD is a diameter, since it passes through the center of the circle, meaning it is the longest segment in the circle.
AB does not pass through the center of the circle and is not a diameter, therefore it is necessarily shorter.
Therefore:
No
Which figure shows the radius of a circle?
It is a straight line connecting the center of the circle to a point located on the circle itself.
Therefore, the diagram that fits the definition is c.
In diagram a, the line does not pass through the center, and in diagram b, it is a diameter.
Which diagram shows a circle with a point marked in the circle and not on the circle?
The interpretation of "in a circle" is inside the circle.
In diagrams a'-d' the point is on the circle, and in diagram c' the point is outside the circle.
Is it possible that the circumference of a circle is 8 meters and its diameter is 4 meters?
To calculate, we will use the formula:
Pi is the ratio between the circumference of the circle and the diameter of the circle.
The diameter is equal to 2 radii.
Let's substitute the given data into the formula:
Therefore, this situation is not possible.
Impossible
M is the center of the circle.
Perhaps
Yes
M is the center of the circle.
In the figure we observe 3 diameters?
Is there sufficient data to determine that
\( GH=AB \)
In which of the circles is the center of the circle marked?
Perhaps \( P=\pi\times EF \)
M is the center of the circle.
Perhaps \( CM+MD=2EM \)
M is the center of the circle.
In the figure we observe 3 diameters?
No
Is there sufficient data to determine that
No
In which of the circles is the center of the circle marked?
Perhaps
Yes
M is the center of the circle.
Perhaps
Yes
M is the center of the circle.
Is AB the diameter?
Perhaps \( MF+MD=AB \)
M is the center of the circle.
Perhaps \( 0.5DC=EM \)
Is it possible for the circumference of a circle to be \( 10\pi \) if its diameter is \( 2\pi \) meters?
Is it possible for the circumference of a circle to be \( 5\pi \) meters if its diameter 5 meters?
M is the center of the circle.
Is AB the diameter?
No
Perhaps
No
M is the center of the circle.
Perhaps
Yes
Is it possible for the circumference of a circle to be if its diameter is meters?
No.
Is it possible for the circumference of a circle to be meters if its diameter 5 meters?
No.
Is it possible for a circle to have a circumference of 314.159 meters (approximately) and a diameter of 100 meters?
Is it possible that a circle with a circumference of 50.6 meters has a diameter of 29 meters?
M is the center of the circle.
Perhaps \( AB+GH<4\times CM \)
M is the center of the circle.
Perhaps \( EM+MC>AB \)
Is it possible for a circle to have a circumference of 314.159 meters (approximately) and a diameter of 100 meters?
No.
Is it possible that a circle with a circumference of 50.6 meters has a diameter of 29 meters?
No.
M is the center of the circle.
Perhaps AB+GH<4\times CM
Yes
M is the center of the circle.
Perhaps EM+MC>AB
Yes