What types of lines are coplanar and intersect at a right angle?

hope this help's

Step-by-step explanation:

Geometry Terms Chapter 3

AB

Coplanarin the same plane

Parallel linescoplanar lines that do not intersect

Intersecting linescoplanar lines that have exactly one point in common

Perpendicular lineslines that intersect at righ- are non-coplanar

- they are not parallel and do not intersect

t angles     are non-coplanar

- they are not parallel and do not intersect

- planes that do not intersect        - two segments are parallel if the lines containing them are parallel           - a line that intersects two or more coplanar lines at different points

- transversal has nothing to do with whether lines are parallel or not          - an angle formed between parallel lines by a third line that intersects them

lie on the same side of the transversal and in corresponding positions

alternate exterior angles

- non-adjacent exterior angles that lie on opposite sides of the transversal

10/56     hope this help you a lot better

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8