Terminology_2 Flashcards
1
Q
10a. When a straight line set up on a straight line makes the adjacent angles equal to one another
A
each of the equal angles is right
2
Q
10b. and the straight line standing on the other is called
A
a perpendicular to that on which it stands
3
Q
An obtuse angle
A
is an angle greater than a right angel
4
Q
An acute angle
A
is an angle less than a right angle
5
Q
A boundary
A
is that which is an extremity of anything
6
Q
A figure
A
is that which is contained by any boundary or boundaries
7
Q
A circle
A
- is a plane figure contained by one line
- such that all the straight lines falling upon it from one point among those lying within the figure are equal to one another
8
Q
Pertaining to circles, the point is called
A
the centre of the circle
9
Q
A diameter of the circle
A
- any straight line drawn through the center
- and terminated in both directions by the circumference of the circle,
- and such a straight line also bisects the circle
