This document defines and describes various geometric shapes including: - Lines, line segments, rays, and types of lines such as intersecting, perpendicular, and parallel lines. - Points and planes. - Triangles classified by angles and sides including right, obtuse, acute, scalene, isosceles, and equilateral triangles. Properties such as sum of internal angles, perimeter, and area of triangles are also defined. - Quadrilaterals including trapezoids, rectangles, rhombuses, squares. Area formulas for rectangles, squares, parallelograms, and trapezoids are provided.

1. LINES
ANGLES
TRIANGLES
QUADRILATERALS
CIRCLES

2. LINESLINES
›Points
›Line Segments
›Rays
›Lines
›Intersecting Lines
›Perpendicular Lines
›parallel
›Skew Lines

3. PointsPoints
●A point is a precise location in
space. It is labeled with a letter.
Point APoint B

4. PLANESPLANES
A plane is a line made of three
points

5. LINESLINES
Lines are never ending straight lines

6. LINE SEGMENTLINE SEGMENT
A Line Segment is a small piece of a
line

7. INTERSECTING LINESINTERSECTING LINES
Intersecting lines are lines that
cross at one point

8. PERPENDICULAR LINESPERPENDICULAR LINES
Perpendicular are two lines that
intersect in a 90 degree angle

9. PARALLEL LINESPARALLEL LINES
Parallel lines are lines that never
meet

10. SKEW LINESSKEW LINES
Two lines that are not in the same
plane

11. TrianglesTriangles
Right
Obtuse
Acute
Scalene
Isosceles
Equilateral
Sum of internal angles
Perimeter
Area

12. Right angleRight angle
A ninety degree angle

13. Obtuse angleObtuse angle
An angle that is more than ninety
degrees

14. Acute angleAcute angle
An angle that is less than ninety
degrees

15. Scalene TriangleScalene Triangle
A triangle with no equal sides

16. Isosceles triangleIsosceles triangle
A triangle with only two equal sides

17. Equilateral triangleEquilateral triangle
A triangle with all equal sides and
angles

18. Sum of Internal AnglesSum of Internal Angles
All angles add up to 180.

19. PerimeterPerimeter
Add all sides together

20. AreaArea
Multiply base and height and divide
by one half

21. QUADRILATERALSQUADRILATERALS
Quadrilaterals
Trapezoid
Rectangle
Rhombus
Square
Area of a Rectangle
Area of a Square
Area of a Parallelogram
Area of a Trapezoid

22. QUADRILATERALSQUADRILATERALS
A shape with four sides and angles
that are connected

23. TRAPEZOIDTRAPEZOID
A quadrilateral with two parallel
lines

24. PARALLELOGRAMPARALLELOGRAM
A quadrilateral with all even sides

25. RECTANGLERECTANGLE
A quadrilateral with two pairs of
parallel lines

26. RHOMBUSRHOMBUS
A sideways square

27. SQUARESQUARE
A rectangle with all even shapes