8th grade Late April Facts by Mr. Turner
-3(.5)
-1.5
-2(5)
-10
-99/9
-11
121/-11
-11
144/-12
-12
25/-2
-12.5
-45/3
-15
80/-5
-16
51/-3
-17
(-3)(6)
-18
9(-2)
-18
90/-5
-18
5(-.5)
-2.5
-60/3
-20
9(-3)
-27
30/-10
-3
6/-2
-3
9/-3
-3
-7(.5)
-3.5
-5(7)
-35
25/-5
-5
60/-12
-5
6(-9)
-54
1(2)(-3)
-6
42/-7
-6
7(-9)
-63
63/-9
-7
70/-10
-7
-72/-9
-8
16/-2
-8
9(-9)
-81
18/-2
-9
-11/-11
1
3 - 1 9/10
1 1/10
6 - 4 1/2
1 1/2
5 - 3 3/4
1 1/4
9 - 7 3/4
1 1/4
2 - 4/5
1 1/5
4 - 2 2/7
1 5/7
4 - 2 4/9
1 5/9
11
1, 11 (prime)
13
1, 13 (prime)
17
1, 17 (prime)
2
1, 2
12
1, 2, 3, 4, 6, 12
6
1, 2, 3, 6
18
1, 2, 3, 6, 9, 18
4
1, 2, 4
8
1, 2, 4, 8
16
1, 2, 4, 8, 16
10
1, 2, 5, 10
14
1, 2, 7, 14
3
1, 3
15
1, 3, 5, 15
9
1, 3, 9
5
1, 5 (prime)
7
1, 7 (prime)
4 - 3 5/6
1/6
39/-3
13
4 - 1 9/10
2 1/10
12 - 9 5/6
2 1/6
10 - 7 8/9
2 1/9
Circumference of a circle
2πr or πd
-6/-2
3
6 - 2 4/7
3 3/7
6 - 2 1/5
3 4/5
5 - 1 1/6
3 5/6
60/2
30
-6(-6)
36
10 - 5 1/3
4 2/3
8 - 3 4/11
4 7/11
7 - 2 2/9
4 7/9
-9(-.5)
4.5
-9(-5)
45
-90/-2
45
-6(-8)
48
-500/-100
5
-6(-9)
54
-8(-7)
56
8(7)
56
24/4
6
9 - 2 3/7
6 4/7
8 - 1 6/11
6 5/11
3 - 2 1/7
6/7
-8(-8)
64
-24/-3
8
-108/-12
9
chord
A segment whose endpoints lie on a circle
diameter
A straight line passing from side to side through the center of a circle or sphere.
Area of a circle
A=πr²
circumference
The distance around a circle
Radius
The distance from the center of a circle to any point on the circle
sectors
a part or division of something; the portion of a circle bounded by two radii and one of the intercepted arcs; to divide into sectors
inscribed angle
an angle whose vertex is on the circle and whose sides are chords of the circle
central angle
an angle whose vertex is the center of the circle
concentric circles
circles that lie in the same plane and have the same center
semicircle
half of a circle
a negative times by a positive is
negative
Arc
part of a circle
radii
plural of radius