Unit 5 Vocab

Unit 5 VocabBy: 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

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

Concentric circles

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

Congruent figures

• A shape that is identical to another shape.

Consecutive angles

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

Corresponding angles or sides

• Angles or sides with the same position.

Inscribed

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

Isometry

• A reflection, translation, or a rotation.

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.

Line of reflection

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

Mid point

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

Obtuse angle

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

Ordered number pair

• Numbers that find a point on a grid.

Parallel line

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

Perpendicular

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

Perpendicular bisector

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

Preimage

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

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.

Reflex angle

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

Right angle

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

Rotation

• A shape that is rotated from its original form.

Sector

• An area inside a circle with two radii.

Straight angle

• An angle that has exactly 180 degrees

Supplementary angles

• Bisecting angles that add up to 180 degrees.

Translation

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

Transversal

• A line segment that interferes with other lines.

Vertex

• A point at which two lines comes together

Vertical angles

• Angles that don’t share a common side.