Lines and Angles Flashcards
1
Q
A straight line that extends in both directions without end
A
a line
2
Q
The part of the line that contains the two points and all the points between them
A
Line segment
3
Q
The point of intersection of two lines
A
vertex
4
Q
Opposite angles
A
Opposite angles are always EQUAL (congruent)
5
Q
The sum of the measure of 4 angles is ____ degrees
A
360
6
Q
Two lines that intersect to form four congruent angles are called….
A
Perpendicular lines
7
Q
Each of the four angles made by two perpendicular lines is ____ degrees
A
90 degrees/ right angle
8
Q
Acute angle
A
angle with measure less than 90 degrees
9
Q
Obtuse angle
A
angle with measure between 90 and 180 degrees
10
Q
Two lines on the same plane that do not intersect
A
parallel lines
11
Q
A
