Unique numbers whose sole factors are 1 and themselves are called...
Prime Numbers, (all are odd except 2)
A ________ numbers consists of an integer and a fraction.
First, Outer, Inner, Last
Two angles that share a common side and end point (vertex), but the rays are not common to both angles.
Formed by intersecting lines, whose sides form two pairs of opposite rays. Always equal in measure.
Two angles the sum of whose measures is 90 degrees.
Two angles the sum of whose measures is 180 degrees.
A line that intersects two or more other lines at different points.
A line which intersects a circle in exactly one point.
___= 3.14 x D or 2 x 3.14 x R
Formula for circumference of a circle.
A four sided, two dimensional figure that has two sets of opposite parallel line.
A ______ has a diamond shape.
A four sided, two dimensional shape with two parallel sides.
Formula for area of a trapezoid.
Formula for area of a square.
The sum of the internal angles of this geometric figure = 180o
A _______ triangle has all three sides of equal length.
An _______ triangle is a triangle in which at least two sides are of equal length.
In a ________ triangle, all sides are of different lengths and the internal angles are all different.
A ______ triangle has one interior right angle.
Area of a triangle
Volume of a cube
SA=6 x s2
Surface area of a cube
A three dimensional figure having six rectangles that cover it.
V=l x w x h
Volume of a rectangular prism
SA= 2lw + 2wh + 2lh
Surface area of a rectangular prism
A three dimensional figure having two congruent circular bases that are parallel.
V = 3.14 x r2 x h
Volume of a cylinder
SA = 2 x 3.14 x r2 + 2 x 3.14 x rh
Surface area of cylinder
A three dimensional figure having all its points the same distance from its center.
V = 4/3 x 3.14 x r3
Volume of a sphere
SA = 4 x 3.14 x r2
Surface area of a sphere
A three dimensional figure having a circular base and a single vertex.
V = 1/3 x 3.14 x r2 x h
Volume of a cone
V = 1/3 x A x h
Volume of a square based pyramid
When removing insulation from a wire before making a splice, care should be taken to avoid nicking the wire mainly because the...
wire is more likely to break. A nick in the wire can be dangerous because it weakens the wire at that point and can lead to breakage.
A good lubricant for locks is...
Graphite, which is powdered carbon, is very slippery and will not bind the small springs and metal parts of a lock.
What is a star drill used for?
It is used with a hammer to make hole in concrete
If the head on a hammer has become loose on the handle, it should be properly tightened by...
using a slightly larger wedge. If you look at a hammer where it is joined to the handle, you will see the top of either a wooden wedge or a metal wedge. Driving another wedge into the handle will tighten the hammer.
Neutral wire can be recognized by the...
natural or whitish color. The hot lead is black and the ground wire is green.
The device used to change AC to DC is a...
rectifier or diode.
The purpose of an air valve in a heating system is to...
relieve air from steam radiators. If air is trapped in the pipes, it prevents the steam from going to the radiator. This prevents the radiator from producing heat.
If a fuse of higher than required current rating is used in an electrical circuit,
severe damage might result to the circuit from overload. A fuse is a safety device used to protect a circuit from serious damage caused by too high a current.
Paint is thinned with
A crack in the distributor cap might cause problems by allowing
moisture to seep in and cause a short in the system. This might prevent the car from starting.