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Is concentric circle and congruent circle are they same?
No. Concentric circles have the same centre but not [usually] the same radius. Congruent circles have the same radius, but not [usually] the same centre. If you have two concentric congruent circles one will be exactly on top of the other.
What word would you use to describe two circles of different radius but of the same center?
They are said to be concentric circles.
What is the intersection of two circles called?
mandorla or vesica piscis (if they have the same radius)
If there are two circles and the small one has diameter of 20 what is the radius of the big circle?
You need some more information about any of the circles, or about the relationship between the two circles, to answer this question.
Are circles congruent?
Two figures are congruent if you can "pick one up" and then place it down on top of the other one in such a way that the two exactly overlay each other... in other words, if they are the exact same shape and size. So, any two circles will always have the same shape, but not necessarily the same size. Only circles that have the exact same size (as measured by matching radius, diameter, circumference, or surface area) are congruent.
Two circles are congruent if they have the same?
The same radius.
Is concentric circle and congruent circle are they same?
No. Concentric circles have the same centre but not [usually] the same radius. Congruent circles have the same radius, but not [usually] the same centre. If you have two concentric congruent circles one will be exactly on top of the other.
What word would you use to describe two circles of different radius but of the same center?
They are said to be concentric circles.
If two circles have the same center one with a 3 centimeter radius the other with a 1 centimeter radius What is the equidistant from the two circles?
If you create third circle with radius 2, then all the points on that circle would be equidistant form both circles. So the answer is a circle with radius 2.
What is the intersection of two circles called?
mandorla or vesica piscis (if they have the same radius)
How many common external tangent can be drawn to two concentric circles?
If the circles have the same radius then an infinite number, and if they do not, then none.
Is the center of a circle the point of intersection for two concentric circles?
Concentric circles are the circles with the same center therefore they do not cross with each other as the "center is not considered a point on the circle". An exception would be two circles that are concentric and have the same radius, in which case the circles are indistinct and every point of the circles is an intersection.
If two circles had the same radius and intersected at exactly one point how would you find the distance between the two centers of the circle?
Multiply the radius by 2.
If there are two circles and the small one has diameter of 20 what is the radius of the big circle?
You need some more information about any of the circles, or about the relationship between the two circles, to answer this question.
Are circles congruent?
Two figures are congruent if you can "pick one up" and then place it down on top of the other one in such a way that the two exactly overlay each other... in other words, if they are the exact same shape and size. So, any two circles will always have the same shape, but not necessarily the same size. Only circles that have the exact same size (as measured by matching radius, diameter, circumference, or surface area) are congruent.
Are two circles congruent if their centers are the same?
Not necessarily. It doesn't matter where their centers are. In order to be congruent, they must have the same radius. On the subject of having the same center . . . the hubcap and the tire are not congruent.
Two or more circles with the same center are?
Concentric circles
