Transcript Geometry 101 - SUSD Student Community

By: Alison & Kailey
Table of Contents
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Point
Line Segment
Line
Intersecting Lines
Parallel Lines
Perpendicular Lines
Ray
Acute Angle
Obtuse Angle
Right Angle
Supplementary Angles
Complimentary Angles
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Acute Triangle
Obtuse Triangle
Right Triangle
Equilateral Triangle
Isosceles Triangle
Scalene Triangle
Radius
Diameter
Circumference
Chord
Arc
Sector
Point
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Point A
A point has no length or width,
it pin-points an exact location.
Line Segment
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A line segment doesn’t go on forever,
but has two exact endpoints.
Line
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A line goes on forever in both
directions and has no end points.
Intersecting Lines
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Point K
Lines that intersect are used when
lines, rays, line segments, or figures,
share a common point.
Parallel Lines
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Two lines in the same direction
that never intersect are called
parallel lines.
Perpendicular Lines
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Point L
When two lines cross vertically
and horizontally and have no
exact endpoints.
Ray
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Point C
The point where the ray begins
is its endpoint.
Acute Angle
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Point N
An acute angle is an angle
between 0 and 90 degrees.
Obtuse Angle
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Point T
An obtuse angle is an angle
between 90 and 180
degrees.
Right Angle
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A right angle is an angle
measuring 90 degrees.
Supplementary Angle
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90 degrees + 90 Degrees
=180 Degrees
Two angles are called
supplementary angles if the sum
of their degree measurements
equals 180 degrees
Complimentary Angles
35 degrees + 55 degrees = 90 degrees
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Two angles are called
Complimentary angles if
their sum equals 90 degrees
Acute Triangle
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A triangle that has 3 acute
angles.
Obtuse Triangle
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A triangle with an angle over
90 degrees.
Right Triangle
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A triangle that has one right
angle.
Equilateral Triangle
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A triangle that has all sides
congruent.
Isosceles Triangle
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A triangle that has only 2
sides congruent.
Scalene Triangle
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A triangle that has all sides
different lengths are Scalene
Triangles.
Radius
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A radius is the point in the
middle of a circle.
Diameter
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The diameter is the space
between the radius and the
outside of a circle.
Circumference
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Circumference
The perimeter of the circle.
Chord
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A
K
A straight line on a circle
connecting one point to
another.
Arc
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A
K
A part of a circle, named by
its endpoints.
Sector
A
B
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A region enclosed by two
radii and the arc joining
their endpoints.