midterm definitions

Question 1

what is a point?

Answer 1

a point indicates a location, it has no dimension and is represented by a dot.

Question 2

what is a line?

Answer 2

-a line is represented by a straight path
-that extends indefinitely in two directions -and has no thickness or width
-it has no starting or ending point

Question 3

what is a line segment?

Answer 3

a line segment is a part of a line that is measurable and has a starting and ending point.

Question 4

what is a ray?

Answer 4

a ray is a part of a line that has a starting point and no ending point.

Question 5

what is a plane?

Answer 5

a plane is represented by a flat surface that extends without end in two dimensions made up of points and lines

Question 6

what are collinear points?

Answer 6

collinear points are point that lie on the same line.

Question 7

what are coplanar points?

Answer 7

coplanar points are points that lie on the same plane.

Question 8

all coplanar lines intersect at one point (true or false)

Answer 8

true

Question 9

coplanar lines NEVER intersect (true/false)

Answer 9

false

Question 10

what are parallel lines?

Answer 10

parallel lines are lines that never intersect

Question 11

what are perpendicular lines?

Answer 11

perpendicular lines are lines that intersect at a right angle.

Question 12

what are intersecting lines?

Answer 12

intersecting lines are lines that intersect at one point in the same plane.

Question 13

what are skew lines?

Answer 13

skew lines are lines that do not intersect and are non-coplanar.

Question 14

what is an angle?

Answer 14

an angle is two rays with a common endpoint.

Question 15

what is a vertex?

Answer 15

the common endpoint of the two rays.

Question 16

what is an acute angle?

Answer 16

an angle that is less than 90 degrees

Question 17

what is a right angle?

Answer 17

an angle that is exactly 90 degrees

Question 18

what is a obtuse angle?

Answer 18

an angle that is more than 90 degrees and less than 180 degrees.

Question 19

what is a straight angle?

Answer 19

an angle that is exactly 180 degrees.

Question 20

what is a reflex angle?

Answer 20

an angle that is more than 180 degrees and is less than 360 degrees.

Question 21

what is a full rotation?

Answer 21

an angle that is exactly 360 degrees

Question 22

what is an adjacent angle?

Answer 22

an adjacent angle is two angles that share the same vertex and one common ray.

Question 23

what is a vertical angle?

Answer 23

two angles that are congruent and directly across from each other.

Question 24

what is a supplementary angle?

Answer 24

angles that when added equal to 180 degrees, they are usually part of a straight angle.

Question 25

what is a complementary angle?

Answer 25

angles that when added equal to 90 degrees, they are usually part of a right angle.

Question 26

what is a transversal?

Answer 26

a transversal is a line that crosses parallel lines to create pairs of congruent and supplementary angles.

Question 27

what does congruent mean?

Answer 27

congruent means having the same measurement.

Question 28

what are corresponding angles?

Answer 28

angles that lie on the same side of the transversal and on the same side of the parallel line, these angles are in the same corner and are congruent.

Question 29

what are alternate interior angles?

Answer 29

angles on opposite sides of the transversal and inside the two parallel lines, these angles are congruent.

Question 30

what are alternate exterior angles?

Answer 30

angles on opposite sides of the transversal and outside the two parallel lines, these angles are congruent.

Question 30

what are same-side interior angles?

Answer 30

angles on the same side of the transversal and inside the parallel lines, these angles are supplementary.