# Lines, rays, points

Acute Angle An angle that measures less than 90 degrees.
Obtuse Angle An angle that measures more than 90 degrees but less than 180 degrees.
Right Angle An angle that measures exactly 90 degrees.
Straight Angle An angle that measures exactly 180 degrees. A straight line.
Complementary angles Two angles that together equal 90 degrees (right angle). They also share a vertez and a ray.
Supplementary angles Two angles that share a vertex and a ray; together they form a straight angle (180 degrees).
Point An exact location in space, usually represented by a dot.
Line A straight path in space, extending in both directions with no endpoint.
Ray A part of a line, it hegins at an endpoint and extends forever in one direction.
Intersecting lines Lines that cross each other at exactly one point.
Parallel lines Lines in a plane that will never intersect.
Perpendicular lines Two lines that intersect to form right angles.
Vertex The point where two rays join to form an angle.

round 1,600 to the nearest thousand 2,000
round 5,689 to the nearest thousand 6,000
round38,238 to the nearest thousand 38,000
round 3,566 to nearest ten 3,570
round 68 to the nearest ten 70
round 17 to the nearest ten 20
round 1,233 to the nearest hundred 1,200
round 35,787 to the nearest hundred 35,800
round 218 to the nearest hundred 200

# Unit 5 Vocabulary

Rhombus Bisects 2 angles of __________; perpendicular
Rectangle Congruent
Isosceles Trapazoid Congruent

# Unit 5 Vocab

Rectangle 4 right angles, 2 pairs of parallel sides
Rhombus 4 congruent sides, 2 pairs of parallel sides
Square 4 right angles, 4 congruent sides, 2 parallel sides
Trapazoid 1 pair of parallel sides
Isosceles Trapazoid 1 pair of parallel sides

# Geometry

All sides are the same length Equilateral triangle
At least 2 sides are the same length Isosceles triangle
No sides are the same length Scalene triangle
One angle is a right angle Right angle
All three sides are acute angles Acute triangle
One angle is obtuse Obtuse triangle
There are four right angles Rectangle
There are four right angles and all sides are the same length Square
There is only one pair of parallel sides Trapezoid
Opposite sides are parallel Parallelogram
Opposite sides are parallel and all sides are the same length Rhombus
A closed plane figure made up of all the points the same distance from the center Circle
Point in the middle of a circle Center
Any line segment that connects two points on the circle Chord
Any line segment that connects the center to a point on the circle Radius
Any line segment that connects two points on the circle and passes through the center Diameter
Figures with the same size and shape Congruent
move a figure in a straight direction slide or transition
Gives figure a mirror image flip or reflection
Moves a figure about a point turn or rotation
Figures are this when it can be folded into 2 congruent halves that fit on top of each other Symmetric
A line on which a figure can be folded so that both halves are congruent Line of symmetry
Same shape but may not have have the same size Similar figures

# For Shool

What is the mean of these numbers? 5,99,1,1,1,9,80 32.6
Find the range of these numbers? 100,500,300,900,150,50,100 850
What is the median of these numbers? 30,92,64,24,15, 30
Can You Find The mode of these munbers? 1,2,3,4,5,6,7,8,9,10,1,2,5,3,,8,8,9,8,6,6,6,8,8 8
Find The Range 100,000,000,000,000,000 ,67,1,5,4 99,999,999,999,999

# gr. 7P re-algebra terms

two rays with a common end point angle
less than 90 angles and greater than zero acute
line that intersects two parallel lines to form eight angles transversial
ten sides decagon
an angle with a measure equal to 180 degrees straight
a transformation where a figure is flippled over a line (flip) reflection
where three or more planes intersect in a point vertex
(next to)two angles that have the same vertex share a common side and do not overlap adjacent
a quadrilateral with exactly one pair of parallel sides trapezoid
a never ending straight path line
the most common unit of measure for angles degrees
a parallelogram with all sides congruent and four right angles square
line segments that have the same length, or angles that have the same measure, shape, or size (clone) congruent
a parallelogram with four right angles rectangle
circle 360 degrees
twelve sides dodecagon
the set of all points in a plane that are the same distance from a given point called the center circle
two angles are ______ if the sum of their measures is 90 degrees complementary
a polygon having three sides triangle
a polygon having all sides congruent and all angles congruent regular polygon
lines that intersect to form a right angle perpendicular
part of a line contraining two endpoints and all the points between them line segment
triangle with all sides congruent equilateral
two angles are ______ if the sum of their measures is 180 degrees supplementary
a closed figure with four sides and four vertices, including squares, rectangles, and trapezoids quadrilateral
a quadrilateral with opposite sides parallel and congruent parallelogram
having five sides pentagon
having eight sides octagon
a transformatin where a figure is slid from one position to another without being turned (slide) translation
an angle with a 90 degree measure right
having the same value equal
a simple closed figure in a plane formed by three or more line segments polygon
a triangle that has at least two congruent sides isosceles
a parallelogram with four congruent sides rhombus
having seven sides heptagon
an instrument used to measure angles protractor
a triangle with no congruent sides scalene
a part of a line that extneds indefinitely in one direction ray
having nine sides nonagon
having six sides hexagon
a transformation where a figure is turned around a fixed point (turn) rotation
an angle from 91 degrees to 179 degrees obtuse
lines that are in the same plane that do not intersect parallel
straight line 180 degrees

1+4 5
3+7 10
8+12 20
12+14 26
100+54 154

9 x 0 0
9 x 1 9
9 x 2 18
9 x 3 27
9 x 4 36
9 x 5 45
9 x 6 54
9 x 7 63
9 x 8 72
9 x 9 81

10-8 2
10-7 3
10-6 4
10-5 5
10-4 6
10-9 1
10-3 7
10-2 8
10-1 9
10-0 0