### alternating Exterior Angles

Angles created when a transversal intersects through twolines. Alternative exterior angleslie ~ above opposite sides of the transversal, and also on the exterior ofthe room between the two lines.

### alternative Interior Angles

Angles developed when a transversal intersects v two lines. Alternative interior angle lie ~ above opposite sides of the transversal, and also on the internal of the space between the 2 lines. That is, lock lie between the 2 lines that intersect through the transversal.

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### Angle

A geometric figure consisting of the union of 2 rays the share a common endpoint.

### edge Bisector

A ray that share a typical vertex v an angle, lies within the inner of the angle, and creates two brand-new angles of equal measure.

### edge Trisector

A ray, among a pair, the shares a usual vertex through an angle, lies within the inner of that angle, and creates, through its partner, three brand-new angles of equal measure. Angle trisectors come in pairs.

### security Angles

A pair of angle whose procedures sum to 90 degrees. Each angle in the pair is the other"s complement.

### Congruent

Of the exact same size. Angles deserve to be congruent to various other angles andsegments have the right to be congruent come othersegments.

### equivalent Angles

A pair of angles produced when a transversal intersects through two lines. Each angle in the pair is top top the very same side of the transversal, but one is in the exterior the the space created between the lines, and also one lies ~ above the interior, between the lines.

### Degree

A unit of measure for the size of an angle. One full rotation is same to 360 degrees. A best angle is 90 degrees. One degree equals ### Exterior Angle

The larger part of one angle. Were one of the rays of an edge to be rotated till it met the various other ray, one exterior angle is covered by the better rotation that the two possible rotations. The measure of an exterior angle is always greater than 180 degrees and is constantly 360 levels minus the measure of the interior angle that accompanies it. Together, one interior and also exterior angle expectations the entire plane.

### inner Angle

The smaller part of one angle, spanned by the room between the beam that kind an angle. Its measure is always less 보다 180 degrees, and also is same to 360 levels minus the measure up of the exterior angle.

### Midpoint

The point on a segment that lies exactly halfway indigenous each end of the segment. The street from the endpoint that a segment come its midpoint is fifty percent the length of the entirety segment.

### Oblique

Not perpendicular.

### Obtuse Angle

An angle whose measure up is greater than 90 degrees.

### Parallel Lines

Lines that never ever intersect.

### Parallel Postulate

A postulate which claims that offered a allude not located on a line, precisely one heat passes through the allude that is parallel to original line. Figure %: The parallel postulate

### Perpendicular

At a 90 degree angle. A geometric number (line, segment, plane, etc.) is constantly perpendicular to an additional figure.

### Perpendicular Bisector

A heat or segment that is perpendicular come a segment and contains the midpoint of the segment.

A unit because that measuring the size of an angle. One full rotation is same to 2Π radians. One radian is equal to degrees.

### Ray

A part of a line v a fixedendpoint top top one end that extends without bound in the other direction.

### appropriate Angle

A 90 degree angle. The is the angle formed when perpendicular present or segment intersect.

### Segment Bisector

A heat or segment that has the midpoint of a segment.

### right Angle

A 180 degree angle. Formed by tworays the share a common vertex and suggest in opposite directions.

### Supplementary Angles

A pair of angle whose steps sum to 180 degrees. Every angle in the pair is the other"s supplement.

### Transversal

A line the intersects through two various other lines.

### Vertex

The common endpoint of two rays atwhich an edge is formed.

### vertical Angles

Pairs of angles created where 2 lines intersect. These angles are formed by beam pointing in opposite directions, and they room congruent. Vertical angles come in pairs.

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### Zero Angle

A zero level angle. The is developed by 2 rays the share a vertex and suggest in the very same direction.