geometry

1. By: Alison & Kailey

2. Table of Contents
• Point
• Line Segment
• Line
• Intersecting Lines
• Parallel Lines
• Perpendicular Lines
• Ray
• Acute Angle
• Obtuse Angle
• Right Angle
• Supplementary Angles
• Complimentary Angles
• Acute Triangle
• Obtuse Triangle
• Right Triangle
• Equilateral Triangle
• Isosceles Triangle
• Scalene Triangle
• Radius
• Diameter
• Circumference
• Chord
• Arc
• Sector

3. Point
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Point A
A point has no length or width,
it pin-points an exact location.

4. Line Segment
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A line segment doesn’t go on forever,
but has two exact endpoints.

5. Line
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A line goes on forever in both
directions and has no end points.

6. Intersecting Lines
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Point K
Lines that intersect are used
when lines, rays, line segments,
or figures, share a common
point.
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7. Parallel Lines
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Two lines in the same direction
that never intersect are called
parallel lines.

8. Perpendicular Lines
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Point L
When two lines cross vertically
and horizontally and have no
exact endpoints.

9. Ray
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Point C
The point where the ray begins
is its endpoint.

10. Acute Angle
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Point N
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An acute angle is an angle
between 0 and 90 degrees.

11. Obtuse Angle
Point T
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An obtuse angle is an angle
between 90 and 180
degrees.
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12. Right Angle
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A right angle is an angle
measuring 90 degrees.

13. 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
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14. Complimentary Angles
35 degrees + 55 degrees = 90 degrees
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Two angles are called
Complimentary angles if
their sum equals 90 degrees

15. Acute Triangle
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A triangle that has 3 acute
angles.

16. Obtuse Triangle
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A triangle with an angle
over 90 degrees.

17. Right Triangle
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A triangle that has one
right angle.

18. Equilateral Triangle
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A triangle that has all
sides congruent.

19. Isosceles Triangle
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A triangle that has only
2 sides congruent.

20. Scalene Triangle
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A triangle that has all sides
different lengths are
Scalene Triangles.

21. Radius
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A radius is the point in
the middle of a circle.

22. Diameter
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The diameter is the space
between the radius and
the outside of a circle.

23. Circumference
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Circumference
The perimeter of the
circle.

24. Chord
A K
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A straight line on a
circle connecting one
point to another.

25. Arc
A K
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A part of a circle,
named by its endpoints.

26. Sector
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A region enclosed by two
radii and the arc joining
their endpoints.