1.1 Points, Lines, Planes
Draw rayAB
A ray with endpoint A and arrowhead at B
What is the difference between a line and a segment?
a line has no length (displayed by 2 arrowheads), while a segment has a definite length and is bound by 2 endpoints
M is the Midpoint of AB. Which is NOT a correct statement?
a) AM + MB = AB
b) AM = MB
c) \bar(AM)=\bar(MB)
C. Cannot use equals when the bar is over the letters.
- A is the definition of segment addition, which makes it correct.
- B is stating the lengths are equal, which is correct.
When two adjacent angles form a pair of opposite rays from their non-shared side, they form what?
a) acute angles
b) compelemtary angles
c) linear pairs
a linear pair
True or False: A line has two dimensions
False - one dimension
A, B, and C are collinear. B is between A and C. If AB= x+10, BC= 3x-4, and AC=46, find the value of x.
x=10
Find the midpoint between (3,4) and (-1, -10)
(1, -3)
True or False: A straight angle has a supplement
False. A straight angle is already 180 degrees, so it cannot have a supplement.
True or False: The intersection of two planes is a point. Explain if false.
False: They intersect on a line
A, B, and C are collinear. B is the Midpoint of AC. If AB= 2x+1 and BC = 5x - 17, what does x equal?
x=6
Find the distance between (3,4) and (-1,-10)
sqrt(212)
about 14.6
True or false: Supplementary angles are both acute
False. Two supplementary angles must add to 180, and two acute angles would not add to 180.
Acute & Obtuse or Both Right
How do I fix the statement
\bar(AB) + \bar(BC) = \bar(AC)
AB + BC = AC
B is the midpoint of AC. If AB= x^2-12 , and BC= 4x , what does x equal?
x=6
Find the endpoint given the Midpoint (-2,-3) and Endpoint (3,10)
(-7,-16)
Ray BD bisects <ABC. If <ABD=5x-6 and <DBC=4x+2, find x and the measure of <ABC.
x=8
<ABC=68