Stepp's Prentice Hall Geometry Chapter 10 Area (slides so play targets)
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Pi times d and 2 (pi) r are both equal to ___ | circumference
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| Arc measure is measured from the ___ ___ | central angle
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| Another name for a half-circle is ___ | semicircle
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| To convert a Percent into a piece of a pie chart ____ | turn the % into a decimal and multiply by 360
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| True or False: arc measure and arc length are the same thing ____ | False
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| True or False: only major arcs are named with 3 letters ___ | False
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| True or False: an arc is shaped like a piece of pie ___ | False
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| True or False: a segment formed by cutting a triangle off of a sector | True
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| True or False: the formulas for arc length and sector area both begin with degrees/360 | True
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| Area of a ___ is base times height | parallelogram
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| A trapezoid has ___ bases | two
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| Which is longer for a given regular polygon, the apothem or the radius? ___ | radius
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| The __ is the height of each of the triangles we make for finding the area of a regular polygon | apothem
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| The base of a parallelogram is ___ side | any
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| The height of a parallelogram is the ___ distance to the base | perpendicular
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| The base of a triangle is any ___ | side
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| In a triangle the height is just the ___ to the base | altitude
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| A rhombus shares the same area formula as the formula for a ____ | kite
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| Apothems are perpendicular to the sides of polygons, so __ triangle tips are useful for solving | right
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| ___ triangle facts like the Pythagorean Thm & triples, 30-60 and 45-45 special triangles are useful | Right
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| To get from the hypotenuse back to the short leg in a 30-60 triangle___ | divide by 2
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| To get from the short leg to the long leg in a 30-60 triangle ___ | multiply by radical 3
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| To get from the leg to the hypotenuse in a 45-45 triangle ___ | multiply by radical 2
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| A triangle with at least two ___ degree angles must be regular | 60
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| The area of a sector will always be less than ___ | the area of the whole circle
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| The length of an arc will always be ___ than the whole circumference | less
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| The measure of an arc will always be less than ___ | 360
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| If an equilateral triangle has a side length of 5, how long is its apothem? | 2.5 times radical 3
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| An equilateral triangle can be broken into two ___ special triangles | 30-60-90
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| Favorable outcomes divided by total outcomes is ___ | probability
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| If the perimeter ratio of two similar figures is 2 to 3, then the area ratios will be ___ | 4 to 9
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| Multiplying by your degrees/360 converts your part into the proper ___ of a circle | fraction
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| the product of the diagonals divided by 2 equals the area of a ____ | kite or rhombus
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| The altitude to the base of an isosceles triangle bisects both the vertex angle and the ___ | base
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| altitudes or heights always involve a ___ angle | right
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| true or false: the area formulas for triangles and parallelograms are the same | False
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| Kites and ___ both have right triangles in them since the diagonals are perpendicular | rhombuses (rhombi)
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| To find the area of a regular polygon, you should draw the ____ triangle | apothem
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| A sector is shaped like a piece of pizza, True or false | true
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| To leave an answer in terms of pi, just treat the pi as if it were a ___ and do not covert to a decimal | variable
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| answers left in terms of pi do not use ___ | 3.14
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| 3,4,5 is the first Pythagorean ___ | triple
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| complete this Pythagorean Triple, ___,12,13 | 5
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