Geometry Terms. Acute Angle An angle with degree measure between 0 and 90.
Unit 4 Math Vocabulary By Noah Morisi. Acute Angle An acute angle is an angle that measures out less...
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Transcript of Unit 4 Math Vocabulary By Noah Morisi. Acute Angle An acute angle is an angle that measures out less...
Adjacent Angles•An Adjacent Angle is an angle, divided
into multiple parts, or has another line segment coming from the vertex.
Axis
An axis is the vertical and horizontal lines that make up the quadrants of a coordinate plane. The vertical axis is usually referred to as the y axis and the horizontal axis is usually referred to as the x axis.
Congruent Figures
Two figures are congruent if they are the same size and shape - that is, if their corresponding angles and sides are equal.
Consecutive Angles
Consecutive angles are when two lines are crossed by another line (which is called the Transversal), the pairs of angles on one side of the transversal but inside the two lines are called Consecutive Interior Angles
Corresponding angles or sides
Corresponding sides and angles are a pair of matching angles or sides that are in the same spot in two different shapes. Look at the pictures below to see what corresponding sides and angles look like
Inscribed
•For something to be inscribed it has to be written, etched, forged into something. Usually its wording or a picture.
Isometry
Isometry is the transformation of the plane is an isometry if, for all points X and Y, the distance between the image points X' and Y' equals the distance between X and Y. In other words, an isometry is a transformation which preserves distance.
Transformation
Transformation is the doing of moving a shape so that it is in a different position, but still has the same size, area, angles and line lengths.
Line of Reflection
The line of reflection is the line in which reflects the shape onto the opposite side, thus creating a “reflection”.
Obtuse Angle
An obtuse angle is an angle that measures to be more than 90 degrees, but less than 180 degrees.
Perpendicular
A line is perpendicular to another if it meets or crosses it at right angles. (90 degrees)
Preimage
The preimage is For a point y in the range of a function ƒ, the set of points x in the domain of ƒ for which ƒ(x) = y. For a subset A of the range of a function ƒ, the set of points x in the domain of ƒ for which ƒ(x) is a member of A. Also known as inverse image.
Reflection
A reflection is simply the reverse of something. Like looking at your REFLECTION in the fountain.
Straight Angle
A straight angle is simply an angle that measures out to be exactly 180 degrees. A straight line.
Supplementary Angles
These two angles (140° and 40°) are Supplementary Angles, because they add up to 180°.