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When two diameters of a circle divide the circle into 4 congruent parts what kind of angle is formed by diameter?
A right-angled (90 degrees) cross (+) is formed by the two diameter lines crossing in the centre of the circle.
WHAT 3-DIMENSIONAL FIGURE IS FORMED BY ROTATING A CIRCLE ABOUT A LINE?
When a circle is rotated about a line that lies in the same plane as the circle and does not intersect it, the three-dimensional figure formed is a cylinder. If the line is outside the circle and parallel to its axis, the result is a cylindrical shell. If the line is the diameter of the circle, the figure formed is a sphere. The specific shape depends on the position of the line relative to the circle.
Are two arcs have the same measure are congruent?
No. Consider two circles of diameter 10cm and 20cm respectively. For the smaller circle consider the arc formed by half the circle. It has a length of pi*5 (where * means multiply) For the larger circle, consider the arc formed by a quarter of the circle. It has a length of pi*5. Both arc lengths are the same but they are not congruent. They have entirely different shapes.
How do you find the diameter of a circle if you do not know the circumference or radius?
One simple method is to measure the radius with a ruler then multiply it by 2 to get the diameter. The accuracy depends on how exactly you are measuring through the center.Geometrically accurate method is as follows:Draw a square within the circle so that each corner or apex of the square touches the circumference of the circle.Draw a straight line from one apex (corner) of the square to the opposite apex (corner) forming a diagonal of the that square.The diagonal of the square is the diameter of the circle.To countercheck the diameter measured, you can use the Pythagorean theorem on the two triangles formed by the diagonal of the the square.Caution: The square must be accurate to get the exact diameter of the circle.
What is a shape that is formed from curved lines?
A circle
What is the measure of the angle formed between a tangent and the diameter of a circle?
It is 90 degrees between the circle's diameter and its tangent
When a right triangle is inscribed in a circle will one of the legs of the triangle always be the diameter of a circle?
yes. the leg of the triangle has to be formed different because of the circle
When two diameters of a circle divide the circle into 4 congruent parts what kind of angle is formed by diameter?
A right-angled (90 degrees) cross (+) is formed by the two diameter lines crossing in the centre of the circle.
If I have a length of Eighty meters when formed into a circle what is its diameter?
The circumference of a circle is defined as 2(pi)d. Transpose the formula and calculate it.
What is a triangle in a circle that is formed by two chords and a diameter?
If a triangle is drawn in a circle with a diameter as the base of the triangle, then the angle opposite that diameter is a right angle. This is an extension of the theorem that the angle which an arc of a circle subtends at the centre of a circle is twice the angle which the arc subtends at the circumference. In the case of a diameter, then the angle subtended at the centre is 180° and thus the angle at the circumference is 90°.
What is a wind turbines width and height?
Its width is the diameter of the circle formed by the rotating blades, it has two heights, the height to the top of the tower and the height to the top of the circle formed by the rotating blades.
WHAT 3-DIMENSIONAL FIGURE IS FORMED BY ROTATING A CIRCLE ABOUT A LINE?
When a circle is rotated about a line that lies in the same plane as the circle and does not intersect it, the three-dimensional figure formed is a cylinder. If the line is outside the circle and parallel to its axis, the result is a cylindrical shell. If the line is the diameter of the circle, the figure formed is a sphere. The specific shape depends on the position of the line relative to the circle.
What are toruses?
A torus is a shape like a doughnut or tyre innertube: the shape that is formed if a circle is spun or rotated about a centre that is outside the circle. Picture a coin being whirled around in big circle at the end of a string: this creates a torus. The two defining dimensions are the diameter of the big circle (the length of the string) and the diameter of the small circle (the coin).
How do you find the circumference of a semi-circle?
The length (circumference) of the curved part of a semi-circle is pi times the radius (pi*R). If the diameter is given, then the semi-circle length is 1/2 (pi * x D) because the radius is 1/2 of the diameter.(There are 2pi radians in a full circle.)A closed shape formed from a semi-circle has a perimeter P = D + (pi * D / 2)(diameter plus the curved part)
What is formed when intersecting or connected lines enclose space?
Shapes
What is the solid formed by polygons that enclose a region of space?
true lalu
Circle shape meaning?
In geometry, a circle is a two-dimensional shape formed by all points that are one consistent distance or "radius" from a single central point. For example, if the radius is 5 inches, then the shape formed from the preceding rule would be a perfectly round circle measuring 10 inches in "diameter" (the distance of any one point on a circle to the farthest point on the same circle).
