Triangle and Angles
What is the missing angle in a triangle that has two 45 degree angles?
90 Degrees
What does r stand for?
Radius
If a shape has a scale factor of 1 unit to 4 feet, what is the actual length of shape with 8 units in it?
The number in front of a variable, specifically being multiplied to that variable
What is a coefficient?
(x+4) / 2 = 10
x = 16
What is the name of a triangle with two equal sides and two equal angles?
Isosceles
What is the radius? (not just r)
Half of the diameter
The measure from the center of the circle to the edge of the circle.
Draw a shape that is 4 by 4 on the grids on the back of your white board
Done
Two triangles that have the exact same angle measurements and the same scale factor.
What are similar objects/shapes?
x - 10 = 100
x = 110
What is the name of an angle that has more than 90 Degrees?
Obtuse
Find the circumference of a circle that has 10 feet of diameter. Use 3.14 as pi.
31.4 feet squared
If the scale factor is 1 to 3, what is the area of your shape?
144 square units
The relationship between circumference and diameter when they are divided.
What is Pi?
x / 10 = 100
x = 1000
What is the area of a triangle with a height of 7 and a base of 13?
45.5 or 91/2
What is the area formula?
pi x r squared
What is the perimeter of that shape?
48
The name for the answer to a division problem
What is a quotient?
3(x + x)= -10
x = -5/3
How many degrees are in a rectangle?
360
What is the area of a circle with diameter of 1 unit? Use 3.14 as Pi.
0.785 square units
What is the scale factor for the AREA of the shape?
9
The number that shows the relationship between the side lengths of two similar shapes.
What is scale factor?
(x / 10 ) - 12 = 50
x = 620