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The Lines and Planes

INCLINED PLANE

INCLINED LINE

VERTICAL LINE

VERTICAL PLANE

HORIZONTAL LINE

HORIZONTAL PLANE

WORKSHEET 1

Name ________________________________ Class ______________ Date ______________

Instructions Answer the following questions.

2. Name a) the horizontal lines b)

the verticle lines c) the inclined lines

d) the horizontal planes e) the verticle

planes f) the inclined planes in the solid

object PQRSTU.

1.Solid object ABCDEF above consists of three

types of lines and planes. Name all the lines

and planes below. Horizontal Lines i. EF

ii. _______ iii. _______ iv. _______ v.

________ Vertical Lines i. _______ ii.

_______ Inclined Lines i. ________ ii.

________ Horizontal Planes i. ABCD

Verticle Planes i. ______ ii. ______ iii.

______ Inclined Plane i.______

NORMAL AND ORTHOGONAL PROJECTION

NORMAL

ORTHOGONAL PROJECTION

PLANE

NAME THE ORTHOGONAL PROJ. AC ON THE PLANE ABED

F

AC ABED

down

(find the point down C)

C

B IS NORMAL

C

E

D

A B ORTHOGONAL

A

B

NAME THE ORTHOGONAL PROJ.AF ON THE PLANE ABED

F

AF ABED

down

(find the point down F)

C

E IS NORMAL

F

E

D

A E ORTHOGONAL

A

B

NAME THE ORTHOGONAL PROJ.CD ON THE PLANE BCFE

F

CD BCFE

back

(find the point at the back of D)

C

D

E IS NORMAL

D

E

C E ORTHOGONAL

A

B

NAME THE ORTHOGONAL PROJ.CA ON THE PLANE ABGH

E

F

H

G

D

C

A

B

NAME THE ORTHOGONAL PROJ. FB ON THE PLANE ABGH

E

F

H

G

D

C

A

B

NAME THE ORTHOGONAL PROJ.CH ON THE PLANE ABGH

E

F

H

G

D

C

A

B

ANGLE BETWEEN A LINE AND A PLANE

DETERMINE THE ANGLE LINE BD AND PLANE DCGH

E

F

B D D C G H DOWN

H

B

D

C

G

A

STEP 2 STEP 1 STEP 3 STEP 1 FIND THE

SAME ALPHABET STEP 3 FIND THE POINT

DOWN B ?

B

C

D

ANSWER lt BDC

DETERMINE THE ANGLE LINE AG AND PLANE ADHE

A G A D H E BACK

H

G

A

H

STEP 2 STEP 1 STEP 3 STEP 1 FIND THE

SAME ALPHABET STEP 3 FIND THE POINT

AT THE BACK OF G ?

ANSWER lt GAH

QUESTION

GAC

HBE

CHG

EGH

HBG

ANGLE BETWEEN TWO PLANES

- DETERMINE THE ANGLE BETWEEN
- PLANE ADGF AND PLANE BCGF

SOLUTION 1

ADGF BCGF

INFRONT A GF

B (point infront A) STEP 2 STEP 1

STEP 3

STEP 4 F STEP 1 FIND THE SAME

ALPHABET STEP 2 CHOOSE ANY ALPHABET

LEFT. STEP 3 FIND THE POINT INFRONT A?

B OR C? ANSWER B STEP 4 G OR

F.. . NEAREST WITH POINT B? ANSWER F

H

G

D

C

E

F

A

B

ANSWER AFB

- DETERMINE THE ANGLE BETWEEN
- PLANE ADGF AND PLANE BCGF

SOLUTION 2

H

G

ADGF BCGF

INFRONT

D GF

C STEP 2 STEP 1 STEP 3

STEP 4 G STEP

1 FIND THE SAME ALPHABET STEP 2 CHOOSE

ANY ALPHABET LEFT. STEP 3 FIND THE POINT

INFRONT D? B OR C? ANSWER C

STEP 4 G OR F NEAREST WITH POINT C?

ANSWER G

D

C

E

F

A

B

ANSWER DGC

- DETERMINE THE ANGLE BETWEEN
- PLANE ADGF AND PLANE ABCD

ADGF ABCD

DOWN

G AD C STEP

2 STEP 1 STEP 3

STEP 4 D STEP 1

FIND THE SAME ALPHABET STEP 2 CHOOSE ANY

ALPHABET LEFT. STEP 3 FIND THE POINT DOWN G?

B OR C? ANSWER C STEP 4

A OR D NEAREST WITH POINT C? ANSWER D

H

G

D

C

E

F

A

B

ANSWER GDC

- DETERMINE THE ANGLE BETWEEN
- PLANE ADGF AND PLANE ABCD

ADGF ABCD

DOWN

F AD B STEP

2 STEP 1 STEP 3

STEP 4 A STEP 1

FIND THE SAME ALPHABET STEP 2 CHOOSE ANY

ALPHABET LEFT. STEP 3 FIND THE POINT DOWN F?

B OR C? ANSWER B STEP 4

A OR D NEAREST WITH POINT B? ANSWER A

H

G

D

C

E

F

A

B

ANSWER FAB

NAME THE ORTHOGONAL PROJ.MG ON THE PLANE ELKF

F

G

MG ELMKF

BACK

K

J

M

E

F

M

H

G

L

I

ANSWER lt GMF

- PREPARED BY

SITI ZARINA BT SYED NORDIN