Compatency 6

Front 1

Dihedral Angles

Back 1

The angle between two planes.

Front 2

True angle between planes

Back 2

Using auxiliary view to find the actualangle measurement between two intersecting planes.

Front 3

Point of intersection

Back 3

The point in which multiple linesegments should meet.

Front 4

Bisecting an angle

Back 4

- A method of finding the incenter orcircumcenter of a triangle.

Front 5

rectified length

Back 5

- Determining the length of an irregulararc segment.

Front 6

skewed

Back 6

A sudden change in direction on a linesegment.

Front 7

oblique plane

Back 7

A plane which declines from the zenith,or inclines toward the horizon.

Front 8

Helix

Back 8

A smooth space curve, i.e. a curve inthree- dimensional space that has the property that the tangent line at anyline at any point makes a constant angle with a fixed line called the axis.

Front 9

Rectangular polygon

Back 9

a geometric shape having all sides equalin length and all angles equal.

Front 10

involute

Back 10

The locus of a point considered as the end of a taut string being unwound from a given curve in the plane of that curve.

Front 11

quadrilateral

Back 11

a polygon with 4 edges, sides, vertices,and corners.

Front 12

ellipse

Back 12

- is a closed curve in the form of asymmetrical oval with four quadrants.

Front 13

hyperbola

Back 13

- a type of smooth curve, lying in aplane, defined by its geometric properties or by equations for which it is thesolution set.

Front 14

parabola

Back 14

the curve formed from all the pointsthat are equidistant from the directrix and the focus.

Front 15

eccentric circle

Back 15

- circles that do not share the same center although the centers of each circle are all contained within at least one of the circles.

Front 16

tanget

Back 16

- a line, arc, or circle that comes into contact with a circle or arc at anypoint.

Front 17

prism

Back 17

apolyhedron with an n-sided polygonal base, another congruent parallel base andn other faces joining corresponding sides of the two bases.

Front 18

cylinder

Back 18

surfaceformed by the points at a fixed distance from a given straight line, the axis.

Front 19

bisecting

Back 19

-dividing an object into two equal parts of size or length.

Front 20

equilateral triangle

Back 20

Trianglewith all side lengths equal, with all interior and exterior angles congruent.

Front 21

Pentagon

Back 21

-a five-sided geometric figure with each side forming a 72° angle.

Front 22

Hexagon

Back 22

-a six- sided figure with each side forming 60° angles.

Front 23

Octagon

Back 23

isan eight sided geometric figure with all angles forming 45°.

Front 24

Acute Triangles

Back 24

No interior angle is less than 90°

Front 25

Equilateral triangle

Back 25

All sides and anglesequal.

Front 26

isosceles triangle

Back 26

Two sides and twoangles equal

Front 27

acute scalene triangle

Back 27

No sides or angles equal.

Front 28

obtuse triangle

Back 28

One angle is greater than 90°

Front 29

obtuse isosceles triangle

Back 29

In an acute triangle, all angles are less than right angles—each one is less than 90 degrees.

Front 30

obtuse scalene triangle

Front 31

Right triangle

Back 31

One90° interior angle

Front 32

square

Back 32

- All equal sides 90°internal angles.

Front 33

rectangle

Back 33

Opposite sides equal90° internal angles.

Front 34

rhombus

Back 34

- Equal sides.

Front 35

rhomboid

Back 35

- Opposite sides equal

Front 36

trapezoid

Back 36

Two parallel sides

Front 37

trapezium

Back 37

No parallel sides

Front 38

pentagon

Back 38

- Five equal sides,five equal angles.

Front 39

hexagon

Back 39

Six equal sides, sixequal angles.

Front 40

heptagon

Back 40

- Seven equal sides,seven equal angles.

Front 41

octagon

Back 41

Eight equal sides,seven equal angles.

Front 42

A dihedral angle is the true angle between two intersecting planes

Front 43

A dihedral angle is found in the view in which both intersecting planes appear as an edge

Front 44

the point of intersection of a line and plane is in the view where the plane appears as an edge

Front 45

laying out a curved surface as a straight line will give you the rectified length.

Front 46

When you take a point and rotate itaround an axis while moving along the axis you will create a helix.

Front 47

A parabola is created when a plane intersects a right circular coneparallel to the side of the cone.

Front 48

A hyperbola is created when a planeintersects a right circular cone parallel to the center line of the cone.

Front 49

A plane intersecting a cone as shown creates what geometric shape?

Back 49

Parabola

Front 50

A straight line that passes through a circle and intersecting it at two different points is called a:

Back 50

Chord

Front 51

Any polygon may be drawn if the number of sides and the distance across the flat is known.

Back 51

True

Front 52

If a line from the center of a circle were to connect to a line at the point at the point of tangency on the circle, the line and the line from the center circle would form a 90° angle.

Back 52

True