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Ab and ac are tangents to a circle with centre o and radius 5cmif ac equals 12cmfind the perimeter of quadrilateral aboc?
Wiki User
∙ 14y ago
Since AB and AC are tangent to the circle O, it seems that they both are drawn from the same outside point A. As tangents to a circle from an outside point are congruent, AB ≅ BC.
Also, a tangent is perpendicular to radius drawn to point of contact. So that OB and OC are congruent radii. Therefore, the perimeter of the quadrilateral ABOC equals to
P = 2(12 cm) + 2(5 cm) = 34 cm.
Wiki User
∙ 14y ago
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Is the radius the center of the circle?
No, it is the distance from the centre to any point on the perimeter in a straight line.
How do you find area and circumfrence of a circle?
It depends on what information you have: radius, diameter, lengths of tangents from a point outside the circle, length of chord and its distance from the centre, etc. Also, the term is circumference, not circumfrence.
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Each point on the perimeter is equidistant from the centre. and because it is. what type of question is that anyways?
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What is the converse of if a figure is a square then it is a quadrilateral?
A figure does not have a converse in the normal sense of the word. A converse may be considered as a transformation of a figure resulting from a projection from a point but then the result depends on where the centre of projection is located.
What is the measure of the angle formed by two tangents drawn to a circle from an external point if they intersect a major arc whose measure is 243 and the minor arc measures 117?
63o. Join the points where the tangents touch the circle to its centre to form a quadrilateral (two meeting tangents and two radii). These angles are both 90o, summing to 180o. Thus the other two angles - the one at the centre of the circle and the one where the tangents meet - sum to 360o - 180o = 180o (they are supplementary). The centre angle is given as 117o (the minor arc), so the angle where the tangents met is 180o - 117o = 63o.
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help me
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No. You can have a very "thin" quadrilateral that is completely in the top half of the circumscribing circle. Then the centre of the circle will be below and OUSIDE the quadrilateral. The diagonals of the quadrialteral will be INSIDE the quadrilateral while they are within the circle and so cannot pass through the centre.
What is the difference between perimeter and diameter?
The perimeter or circumference is the distance around a circle whereas the diameter is the distance across a circle through its centre.
Why is suns gravity only in the perimeter?
It isn't. Gravity can be viewed as emanating from the centre of a body with mass. As the distance increases from the centre then the gravity decreases.
Is the radius the center of the circle?
No, it is the distance from the centre to any point on the perimeter in a straight line.
Why is a circle a circle?
Each point on the perimeter is equidistant from the centre. and because it is. what type of question is that anyways?
What do you call a circle within the perimeter of another circle?
If they share the same centre - they're 'concentric'
How do you find area and circumfrence of a circle?
It depends on what information you have: radius, diameter, lengths of tangents from a point outside the circle, length of chord and its distance from the centre, etc. Also, the term is circumference, not circumfrence.
What is the formula for finding the perimeter of a circle when you know the distance across the centre?
c= pii x d
What is the formula of the sector of the circle?
There is no specific formula for a sector of a circle. There is a formula for its angle (at the centre), its perimeter, its area.
What is the perimeter of a circle and the diameter of a circle?
Circumference (perimeter) of a circle = pi x diameter Diameter of a circle is the straight line distance from one side to the other which passes through the centre of the circle.
