What type of lines go on forever without touching and always stay the same distance apart?
Parallel lines
What is the unit for angles? (hint: think of temperature)
Degrees
What type of angles are across from/opposite of each other and are formed with the same two lines?
Vertical angles
What is the ruler postulate formula?
l x2 - x1 l
What unit of measure is perimeter?
units
What type of lines meet or cross at one point?
Intersecting lines
How many ways can an angle be named? Give an example of an angle being named in that many ways.
Three ways; ∠ABC, ∠CBA, ∠B
What types of angles add up to 180°?
Supplementary angles;
What is the mid point formula?
x2 + x1 , y2 + y1
______ ________
2 2
When do you use square units?
What are the names of the three figures that can be made with two points? (hint: l _ _ _, r _ _, and l _ _ _ s _ _ _ _ _ _)
Line, ray, and line segment
What type of angle is exactly 180°?
Straight angle
What is always true about vertical angles?
They are not adjacent to each other.
When do you use the distance formula?
What is a diagonal line?
Draw out an example of and write the notation for a line, line segment, and ray.
Answer will vary.
What is the name of the figure below?
Ray AB
What is the degree measure of a right angle?
90°
What degree measure is the complement of a 39° angle?
51°
A= 1/2 bh
What is the area of a triangle?
True or false: lines, line segments, and rays can all be named in many ways since you just use any two points on the line
False: correct for lines and line segments, but rays must be named with the endpoint first
The symbol meaning "congruent"?
What are two horizontal lines and a squiggly line on top.
Between what degrees does an obtuse angle need to be between?
90° and 180°
What degree measure is the supplement of a 13.29° angle?
166.71°
What operation do you use when finding perimeter?
What is addition ?
How do you name a plane?
With 3 points and 1 must not be collinear