Set: Geometry Chapter 11 areas of triangles and regular polygons circumference, length of arcs, area of circles and sectors

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All 21 terms

TermDefinition
(1/4)radical3 times length of side squaredarea of an equilateral triangle (formula) if you know only the side length
6, 60Number and measure of central angles in a regular hexagon
12If the apothem of a regular triangle is 6, and the base is 4, what is the area of the triangle?
10A regular polygon has area 40 and apothem 8. What is its perimeter?
36A square has apothem 3. What is its area?
36What is the area of a regular polygon with apothem 6 and perimeter 12?
16pi (50.27)What is the area of a circle with diameter 8?
3pi (9.42)if a central angle is 120 degrees, and the radius is 3, what is the area of the sector defined by the intersection of the angle and the circle?
7.2pi (22.62)SORRY- it doesn't let me show pictures- what is the area of the two smallest sectors made when two 12 cm diameters intersect to make two 36 degree central angles?
4 times greaterIf the radius of circle A is twice that of circle B, how many times greater is the area of circle A than circle B?
apothemdistance from the center to any side of a regular polygon
circlethe radius of a polygon is the radius of its circumscribed ______
(1/2)apothem times perimeterformula for the area of a regular polygon
arc length of AB = (mAB/360) times 2pi times radiuswhat is the formula for the arc length corollary?
diameter times pi OR 2pi times radiusformula for circumference of a circle
arc lengthportion of the circumference of a circle
(mAB/360) times pi times radius squaredformula for the area of a sector
pi times radius squaredArea of a circle (formula)
228.67pi (718.38)A circle has a radius of 28 cm, and an arc AB that is made from a central angle of 105 degrees. Find the area of the sector made.
96 radical3A regular hexagon has a side of 8 feet. What is its area (in reduced radical form)?
4.83A stop sign has a side of 1 foot in length. What is its area?

Set Information

Terms 21
Creator Kmanley
Created May 30, 2009
Groups None
Subjects geometry, Mrs. Gibbons
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Description

geometry 11.2, 11.4, and 11.5

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Most Missed Words

  1. 4.83 A stop sign has a side of 1 foot in length. What is its area? - 1 miss
  2. 228.67pi (718.38) A circle has a radius of 28 cm, and an arc AB that is made from a central angle of 105 degrees. Find the area of the sector made. - 1 miss
  3. (1/4)radical3 times length of side squared area of an equilateral triangle (formula) if you know only the side length - 1 miss
  4. 12 If the apothem of a regular triangle is 6, and the base is 4, what is the area of the triangle? - 1 miss
  5. diameter times pi OR 2pi times radius formula for circumference of a circle - 1 miss
  6. (mAB/360) times pi times radius squared formula for the area of a sector - 1 miss
  7. arc length of AB = (mAB/360) times 2pi times radius what is the formula for the arc length corollary? - 1 miss