Vocab
The distance around a circle/the perimeter of a circle
What is circumference
A triangle's angles have to add up to what?
What is 180 degrees?
A synonym for parallel
What is horizontal?
The two formulas for circumference
What C=pi*d or C=2*pi*r?
-11(-15 + 12)
What is 33?
The 2-D shape formed from slicing a 3-D shape
What is a cross-section?
3 inches, 11 inches, 8 inches. Will these sides form a triangle?
What is NO?
The three main ways to cut a 3-D shape
What is parallel, perpendicular, and diagonal?
The diameter of a circle with a radius of 3.5 yards.
What is 7 yards?
The value of x in the equation below?
−6x + 9 = 33
What is x = -4?
A line that goes from one side of the circle to the other, passing through the center.
What is a diameter?
What makes a triangle obtuse?
It has an angle that is greater than 90 degrees.
The parallel cross section of a cone
What is a circle?
The circumference of a circle when the diameter is 25cm
What is 78.5cm?
Simplify the expression
31y − 14z − 3y − 12x + 7 − 3z
What is −12x + 28y − 17z + 7
The constant ratio between a circle's circumference and its diameter
What is pi?
Angles: 35, 70, 75
Sides: 5 cm 6 cm 7 cm
Based upon its angles and sides, what type of triangle is this?
What is acute scalene triangle?
The perpendicular cross section of a cylinder
What is a rectangle?
The circumference of a circle when the radius is 2 1/2 inches.
What is 15.7 inches?
A small business owner is determining her profit for one month. Her expenses were $230.21 for utilities, $2,679.82 for rent, and $3,975.00 for employee salaries. She had $11,449.27 in sales for the month. What is her profit?
What is $4,564.24?
The triangle inequality theorem
The sum of the two smallest sides must be larger than the third side
1. The sum of the lengths of the two shorter sides of the triangle is greater than the length of the longest side.
2. Two of the angles of the triangle are obtuse and one angle is acute.
Which statement is false? Justify.
Statement 2 because you can't have a triangle with two obtuse angles because it would be greater than 180 degrees.
A square pyramid is sliced vertically through its vertex.
What is the shape of the cross section of the pyramid?
What is a triangle?
The radius of a circle when the circumference is 27 meters.
What is 4.3 meters?
Cindy spent $96 on clothes and paid 6% sales tax on her purchase. She also spent $44 on groceries but was charged no sales tax. How much did she spend altogether?
What is $145.76?