Lines, Points and Planes
Addition Postulates
Midpoint and Bisectors
Angles 1
Angles 2
100
Draw a line, a ray, opposite rays, and a plane.
look at the board
100
Write the segment addition postulate for the points described. Draw a picture to help. X is between A and C
drawing on board AX+XC=AC
100
Look at drawing on board. B is the midpoint of AC. If AB= 20, find BC.
BC= 20
100
Look at the drawing on the board. Name the vertex of the angle.
vertex= Y
100
Look at drawing on board. What type of pair angles are these?
linear angles
200
What is collinear? represent what collinear means with a drawing.
look at board
200
look at drawing on board. If AC= 24 in. and CE= 13 in. Find AE=______
37
200
Look at drawing on board. B is the midpoint of AC. If AB= 50 and AC= 130, find BC.
BC= 80
200
Look at the drawing on board. Name the angle in four ways.
angle XYZ angle ZYX angle 1 angle Y
200
Look at drawing on board. What type of pair angles are these?
vertical
300
______________ is the amount of space between two points on a line. It is always expressed as a positive number. (distance or midpoint)
distance
300
Look at drawing on board. If AB=x+2, BC= 4x+7, and AC= 19. Find AB.
AB= 4
300
Look at drawing on board. B is the midpoint of AC. If AB=3x-8 and BC= x+12. Find x.
x=10
300
Look at the drawing on board. What is the closest measure of angle A? a. 90 degrees b. 11degrees c. 45 degrees d.120 degrees
c. 45 degrees
300
Look at the drawing on the board. Are angle A and angle B complementary, if angle A= 70 and angle B=25? Why or why not?
NO. 70+ 25 = 95, complementary angles equal 90 degrees.
400
Draw line AB intersecting line CD and show at least three collinear points and one noncollinear point in your drawing.
look at board
400
Look at drawing on board. If angle KLN=20 and angle NLM= 75. Find angle KLM.
angle KLM= 95 degrees
400
Look at the drawing on the board. DB is the angle bisector of triangle ABC. If angle 1= 35. Find angle 2 and angle ABC.
angle 2= 35 angle ABC= 70
400
Look at drawing on board. What is the closest measure of angle B? a. 75 degrees b. 130 degrees c. 180 degrees d. 38 degrees
b. 130
400
Look at drawing on board. Angle 1 and angle 2 are supplementary. Find measure of angle 2, if angle 1= 20.
measure angle 2= 160
500
Find the length of XZ. (Drawing on board)
6
500
Look at drawing on board. Remember this is using angle addition postulate. If angle ABD= 2x+8, angle DBC= 3x-3, and andgle ABC= 50. Find x.
x= 9
500
Look at drawing on board. DB is angle bisector of triangle ABC. If angle 1= 5x-2 and angle 2= 4x+5. Find x.
x= 7
500
Look at the drawing on board. The angle is complementary. If angle ABD= 2x=10 and angle DBC= 8x, find x.
x= 8
500
Look at drawing on board. Angle 1 and angle 2 are supplementary angles. Find x, if angle 1= 6x+30 and angle 2= 4x.
x=15
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