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Math Vocabulary Unit 5 1

Math Vocabulary Unit 5 1. Geometry By Jim Auld. Angles. Right. 90°. Angles. Acute. An angle measuring less than 90°. Angles. Obtuse. An angle measuring more than 90° and less than 180°. Triangles The Sum of all the angles = 180°. Equilateral Triangle.

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Math Vocabulary Unit 5 1

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  1. Math VocabularyUnit 5 1 Geometry By Jim Auld

  2. Angles • Right 90°

  3. Angles • Acute An angle measuring less than 90°

  4. Angles • Obtuse An angle measuring more than 90° and less than 180°

  5. TrianglesThe Sum of all the angles = 180° • Equilateral Triangle A triangle with 3 congruent sides

  6. TrianglesThe Sum of all the angles = 180° • Scalene Triangle A triangle with NO congruent sides

  7. TrianglesThe Sum of all the angles = 180° • Isosceles Triangle A triangle with two congruent sides

  8. TrianglesThe Sum of all the angles = 180° • Right Triangle A triangle with one right angle (90°)

  9. QuadrilateralsThe Sum of all the angles = 360° A four-sided polygon

  10. Quadrilaterals The Sum of all the angles = 360° • Parallel Two Lines that never intersect

  11. Quadrilaterals The Sum of all the angles = 360° • Rectangle • 2 parallel sides • 4 Right Angles

  12. Quadrilaterals The Sum of all the angles = 360° • Square • 2 Parallel sides • 4 Right Angles • 4 Equal sides

  13. Quadrilaterals The Sum of all the angles = 360° • A parallelogram whose four sides are congruent and whose opposite angles are congruent • Rhombus

  14. Quadrilaterals The Sum of all the angles = 360° • A quadrilateral with exactly one pair of parallel sides • Trapezoid

  15. Quadrilaterals • A quadrilateral with opposite sides are parallel and congruent • Parallelogram

  16. Regular Polygons A polygon with all sides and all angles equal

  17. Regular Polygons • A five-sided polygon. • The sum of the angles of a pentagon is 540 degrees. • Pentagon

  18. Regular Polygons • A six-sided polygon. • The sum of the angles of a hexagon is 720 degrees. • Hexagon

  19. Regular Polygons • A seven-sided polygon. • The sum of the angles of a hexagon is 900 degrees. • Heptagon

  20. Regular Polygons • An eight-sided polygon. • The sum of the angles of an octagon is 1080 degrees. • Octagon

  21. Regular Polygons • A ten-sided polygon. • The sum of the angles of a decagon is 1440 degrees. • Decagon

  22. Regular Polygons A figure is convex if every line segment drawn between any two points inside the figure lies entirely inside the figure. • Convex

  23. Math VocabularyUnit 5 2 Geometry By Jim Auld

  24. Investigation 2 The perimeter of a polygon is the distance around the outside of the polygon • Perimeter L + L + W + W = P

  25. Investigation 2 The number of square units it takes to completely fill a polygon. • Area L x W = A

  26. Investigation 2 • Dimension The measurement of a polygon. Example: Length, Width or Height.

  27. Investigation 2 • Similar Polygons that have the same shape, not necessarily the same size they are similar.

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