Vocab 1
An angle that is 90 degrees.
Right angle
What is the distance formula?
sqrt((x2-x1)^2+(y2-y1)^2)
((x1+x2)/2, (y1+y2)/2)
Draw a plane and label it Plane A at least two different ways.
Plane A
An angle that is less than 90 degrees.
Acute angle
An angle that is greater than 90 degrees.
Obtuse angle
Find the distance between (1,3) and (2,6).
sqrt(10)
Find the midpoint of (6,4) and (2,8).
(4,6)
Draw a plane containing the line AB and the segment XY. Name and label each one.
Line AB
Segment XY
Angles that add up to 90 degrees.
Angles that add up to 180 degrees.
Complementary Angles
Supplementary Angles
Segments or angles that have the same measure are called _____.
Congruent
Find the distance between (-3,5) and (7,-4).
sqrt(181)
Find the midpoint of (-3,11) and (5,-7).
(1,2)
B is between A and C.
If AB=5, BC=15, find AC.
20
Angles with a common vertex and a common side. (i.e. angles that are directly next to each other)
Adjacent Angles
Something that divides a segment or angle into two congruent parts is called a _____.
Bisector
Find the distance between (-6,-11) and (-1,-10).
sqrt(26)
Find the midpoint of (-4,-9) and (-3,-14)
(-7/2,-23/2)
B is between A and C.
If AB=2x, BC = 3x+4, and AC=54, solve for x.
10
A location having neither shape nor size.
Made up of at least two points. Extends infinitely in both directions.
Has one endpoint and extends infinitely in one direction.
A flat surface made up of at least three points.
A boundless, 3-D set of all points.
Point
Line
Ray
Plane
Space
Two nonadjacent angles formed by two intersecting lines.
Vertical Angles
Find the perimeter of a square with vertices A(-1,3), B(3,3), C(3,-1), and D(-1,-1).
16
Segment AC has endpoint A(1,4) and midpoint B(-2,1). Find the missing endpoint C.
(-5,-2)
B is between A and C.
If AB=13, BC=3x+4, and AC=29, find BC.
16
Lines, segments, or rays that form right angles are called _____.
Perpendicular