Post on 10-Jul-2015
description
Geometry Guide
Lines triangles
quadrilaterals circles
Lines
● Points● Line Segments● Rays● Lines● Intersecting Lines● Perpendicular Lines● Parallel Lines● Skew Lines
Points
● A point is a percise location in space.It is labeled with a letter.
Points
Point s
A place repreasenting were a number is separated.
Line segment
A point in a line
Ray
Two points on a line that make it stop.
intersecting
When two line cross.
perpendicular
Intersecting as a right angle
paralell
When two lines are evenly apert going the same way
Skew line
Triangles
Triangles
acute
When an angle is less than 90 degrees
obtuse
When an angle is more than 90 degree.
right
A right angle is alwase only 90 degrees
straight
A line that never ends.
isosceles
A triangle with two even sides.
scalene
A triangle with no even sides.
Sum of internal angles
A sum when you add a sides of a triangle.
vertex/verticals
A corner of a shape.
complementary
Two angles that add up to 90 degrees.
supplementary
To or more angels that add up to 180 degrees
vertical/opposite
When a line is pointing up.
adjacent
An angle next to another
quadrilateral
A square with four conecting sides
trapezoid
A trapezoid is a shape with one set of parallel sides.
parallelogram
A parallelogram is a shape with two congruent sides.
rectangle
A shape with two sets congruent sides
rhombus
A shape with four congruent sides.
square
A shape with four congruent sides and angles.
Area of rectangle
Multiply the base with the with then divide in half.
5
10
10x550
50 225
Area of square
When you add all four sides together then divide in half.4
4
4
4
Area of trapezoid
When you add all the sides together then divide it.
Area of parallelogram
When you add all four sides together then divide in half.
Circles
chord
A pass through the circle from one point to another.
Diameter
A pass through the middle of the circle.
Radius
The distance from the middle of the circle to the side.
Circumference
The distance around the circe.
Arc
The distance on the out side edge of the circle.
Area
The space inside the circle.