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Unit 5 Vocab

Unit 5 Vocab. By: Claire Riddell. Acute angle. An angle that is smaller than 90 degrees. Adjacent Angles. An adjacent angle is angles that are beside and close to each other. Axis. An axis is in a number line, and the axis is the point where the lines intersect. Bisecting an angle.

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Unit 5 Vocab

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  1. Unit 5 Vocab By: Claire Riddell

  2. Acute angle • An angle that is smaller than 90 degrees

  3. Adjacent Angles • An adjacent angle is angles that are beside and close to each other.

  4. Axis • An axis is in a number line, and the axis is the point where the lines intersect.

  5. Bisecting an angle • Dividing an angle, into two smaller, individual angles.

  6. Concentric circles • A circle, in little circles that has different measures, Like in a target.

  7. Congruent figures • A shape that is identical to another shape.

  8. Consecutive angles • Angles that are in a shape, that are similar because they are on the same side.

  9. Corresponding angles or sides • Angles or sides with the same position.

  10. Inscribed • A shape that fits into a circle, with the vertices all touching the circles shape.

  11. Isometry • A reflection, translation, or a rotation.

  12. Transformation • A figure that has a reflection, translation, or a rotation. A reflection is the same exact figure, but backwards. A translation is the same figure but the same way it was, not backwards. A rotation is a figure that rotates to a certain side or degrees.

  13. Line of reflection • A line that separates two shapes that are aced the same way, and are exactly alike.

  14. Mid point • A point in between a line, with two other points.

  15. Obtuse angle • An angle larger than 90 degrees, but smaller than 180 degrees.

  16. Ordered number pair • Numbers that find a point on a grid.

  17. Parallel line • A parallel line is two lines that are beside each other and do not intersect.

  18. Perpendicular • Places or line segments that meet or intersect when they are at a right angle or 90 degree angle.

  19. Perpendicular bisector • An angle that separates into two angles that are perpendicular to each other.

  20. Preimage • A figure that is transformed by a reflection, rotation or a translation.

  21. Reflection • An image that is copied onto another grid/paper/etc. The same image is faced the exact same way and has the same shapes, or lines.

  22. Reflex angle • A reflex angle is an angle that is bigger than 180 degrees and smaller than 360 degrees.

  23. Right angle • An angle that is exactly 90 degrees and looks like two sides of a square.

  24. Rotation • A shape that is rotated from its original form.

  25. Sector • An area inside a circle with two radii.

  26. Straight angle • An angle that has exactly 180 degrees

  27. Supplementary angles • Bisecting angles that add up to 180 degrees.

  28. Translation • A shape that is copied by another shape, but is facing towards the same shape.

  29. Transversal • A line segment that interferes with other lines.

  30. Vertex • A point at which two lines comes together

  31. Vertical angles • Angles that don’t share a common side.

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