Points, Lines, and Planes
How is a point represented in Geometry?
A dot
Describe the segment addition postulate.
It is when you add two parts of a segment to create a whole segment. (AB + BC = AC).
What is the definition of a midpoint?
A midpoint is a point that divides a line segment into two congruent parts.
What is the definition of an angle?
A set of points that share a vertex and have two rays for sides.
What are complementary angles?
Two positive angles that add up to 90 degrees.
True or False
A plane is 3 dimensional.
False! It is two dimensional.
What is the Pythagorean theorem formula?
a2+b2=c2
A line that divides a segment into two equal parts is called what?
Segment Bisector
True or False
Angles, like line segments, can also be bisected.
True! Angle bisectors divide an angle into two congruent angles.
Two angles that have a common side and share a vertex are called what?
Adjacent angles.
What is the definition of a line?
A line is a geometric figure that extends at both ends infinitely.
What is the distance formula used for?
The distance formula is used to find the distance between two coordinate points.
What is the midpoint formula?
.
An angle that measures less than 180 but more than 90 is what type of angle?
Obtuse angle.
True or False
There is no difference between adjacent angles and linear pairs.
False! Linear pairs add up to 180 degrees and adjacent angles can add up to more or less than that.
A line that has one endpoint and then extends forever in one direction is called what?
A ray.
What is the distance formula?
.
True or False
A line can NEVER be bisected.
True! Lines go on forever, therefore they have no "middle."
The middle letter in the angle name ABC is the what of the angle?
Vertex.
Two angles that add up to 180 degrees are called what?
Explain the difference between a line and line segment.
How would you use the pythagorean theorem on a coordinate plane when given two points?
Tell me a ratio!
1:2, 3:4, 2:3
A straight angle looks like a line and measures 180 degrees.
Define vertical angles.
When two angles sides form opposite pairs of rays and are congruent.