Angle Definitions
Two positive angles whose measures have a sum of 90° are called?
complementary angles
Find the midpoint M between points A (1,5) and B (3, -4)
M (2, 1/2)
What is the formula for area of a rectangle?
A = l * w
Are vertical angles next to each other?
No, they are across from each other.
Three points that lie on the same line are called?
collinear
Two positive angles whose measures have a sum of 180° are called?
supplementary angles
Find the distance between points A (0,5) and B (0, -13)
18
If you are not given the units for a figure and you are finding the area of the figure, what should you put after you find the area number?
units2
If angle AFC = 90o and there is a ray FB between the angle, find angle BFC if angle AFB is 39o. **Draw on the board.**
angle BFC = 51o
How many noncollinear points do you need to name a plane?
Two angles that share a common vertex and side, but have no common interior points are called?
adjacent angles
Find the midpoint M between points A (-8,3) and B (0, 11)
M (-4, 7)
What is the formula for area of a triangle?
A = 1/2 * b * h
What are the two components needed for angles to be called a linear pair?
They must be adjacent and add up to 180o.
What is the difference between a line and a line segment?
A line keeps going while a segment has two endpoints. A line symbol has arrows on the end of it while a line segment does not.
Two adjacent angles are a ______________ when their noncommon sides are opposite rays.
linear pair
Find the distance between points A (- 4, - 8) and B (-1, 4)
sqrt(153) = 12.4
How do you find the perimeter of any figure (not just a rectangle or triangle)?
Add up all the side lengths.
What is the difference between complementary and supplementary angles?
Complementary angles add up to 90o while supplementary angles add up to 180o.
Given line segment QR with point S on the line, if the length of QR is 59 and SR is 47, what is the length of QS?
Two angles are _______________ when their sides form two pairs of opposite rays.
vertical angles
The midpoint of EF is M (1, -1). One endpoint is E (-3, 2). Find the coordinates of the endpoint F.
F (5, -4)
When two points do not line up horizontally or vertically and you have to find the distance between them, you have to use the distance formula. Write out the distance formula.
sqrt [ (x2 - x1)2 + (y2 - y1)2]
If angle QRS is a straight angle with ray RT between Q and S, find the measure of angle QRT if angle QRT is (3x + 5) and angle TRS is (10x - 7). **Draw diagram on the board.**
angle QRT = 47o
Sketch a figure that contains a plane and two lines intersecting the plane at one point.
Sketch on the board