Unit 5

Question 1

Acute Triangle

Answer 1

A triangle that contains only angles that are less than 90 degrees.

Question 2

Center of Gravity

Answer 2

A 3D point where the total weight of the body may be considered to be concentrated.

Question 3

Centroid

Answer 3

A 3D point defining the geometric center of a solid.

Question 4

Tangent

Answer 4

A straight or curved line that intersects a circle or arc at one point only.

Question 5

Circumscribe

Answer 5

1. A triangle located round a polygon such as a circle.

2. To draw a figure around another, touching it at points but not cutting it.

Question 6

Principal Axes

Answer 6

The lines of intersection created from three mutually perpendicular planes, with the three planes’ point of intersection at the centroid of the part.

Question 7

Density

Answer 7

The measure of mass density is a measure of mass per volume.

Question 8

Volume

Answer 8

The amount of three-dimensional space occupied by an object or enclosed within a container.

Question 9

Inscribe

Answer 9

To draw a figure within another so that their boundaries touch but do not intersect.

Question 10

Obtuse Triangle

Answer 10

A triangle with one angle that is greater than 90 degrees.

Question 11

Fillet

Answer 11

A curve formed at the interior intersection between two or more surfaces.

Question 12

Right Triangle

Answer 12

A triangle that has a 90 degree angle.