Unit 7
Inferences
Inferences
Unit 8
Angles, Cross Section & Circumference
Angles, Cross Section & Circumference
Triangle
Types
Types
More Triangles
100
This is the median of the data set below
{5, 18, 35, 42, 50}
What is 35
(The median is the middle number)
100
This is the only cross section of a sphere
What is a circle
100
This triangle has three equal sides and three equal angles
What is an equilateral triangle
100
DAILY DOUBLE
The sum of the three angles of a triangle
What is 180 degrees
200
This is the mean of the data set below
{10, 22, 3, 6, 14}
What is 11
(The mean is the average. Add all the numbers and divide by the amount of numbers)
10+22+3+6+14=55
55/5=11
200
True or False
One cross section of a rectangular prism is a circle
False
200
The angles of this triangle are all less than 90 degrees
What is an acute triangle
200
One angle of the triangle is 110 degrees, one angle is 45 degrees, and the remaining angle is ____________ degrees
What is 25 degrees
(180-110-45 = 25)
300
True or False
A survey is taken of the most popular subject in school. An example of an unbiased survey; is for a student to select a few of her female friends to answer the survey
False
(convenience biased sample- due to only surveying friends and all friends being female)
300
DAILY DOUBLE
Angle A and B are supplementary angles:
This is value of x when Angle A is 40 and Angle B is 2x
What is x=70
2x + 40 = 180
-40 -40
2x = 140
2x/2 = 140/2
x = 70
300
This is the type of triangle pictured below
What is a right triangle
(the small box in the corner indicates a 90 degree angle)
300
The 3 Rules of Triangle Inequality Theorem; used to determine whether the lengths of a triangle's sides make a triangle
What is
A + B > C
B + C > A
C + A > B
400
50 of 200 students surveyed at Grace Snell Middle School stated that their favorite subject is Math.
Out of 3,000 students, this is the amount of student's expected to choose Math as their favorite subject
What is 750 students
50/200= 0.25 (25% of students' favorite subject is Math)
0.25 x 3000 = 750
400
This is the approximate radius of a circle with a circumference of 18.84 inches
What is 3 inches
C= d(pi)
18.84 = d(3.14)
18.84/3.14 = d
6=d
(diameter is twice a radius: 6/2= 3)
400
The type of triangle pictured below
What is an isosceles triangle
(Two of three angle measures are the same)
400
True or False
The three side lengths of the triangle can be:
5.9 feet, 9.4 feet, 3.5 feet
What is False
(5.9+3.5 = 9.4 ft, two sides cannot equal the third side it must be more than the third side)