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for Junior High School

Middle grade

Even Semester

By

ST ZULAIHA NURHAJARURAHMAH

1111040168

International class program

State University of Makassar

Rectangular prism

Rect

angula

r

pri

sm

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Elements of rectangular prism

the faces of rectangular prism

rectangular prism KLMN OPQR

mention,the face of rectangular prism?

K L

MN

O P

QR

KLMN

KLPO

LMQP

MNQR

KNRO

OPQR

How many the face of rectangular prism?6 sides

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so, what is the meaning of face’s rectangular prism ?

The parts circumscribe inside and outside of rectangular prism.

what is organized as the face of rectangular prism…?

RECTANGLE

??

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The Edges Of

Rectangular PrismThe edges is the intersect line between two

face of rectangular prism.

K L

MN

O P

QR

How many the edges in the picture ? 1

2

The edges of rectangular prism KLMNOPQR

KL LM MN NK

OP QRPQ RO

KO LP MQ NR

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Diagonal of Face

Diagonal

is the line to connecting two angle points of rectangular prism

Diagonal of face

is the diagonal which lies in the faces of the rectangular prismK L

MN

O

QR

Which is called the diagonal of face in the rectangular prism

KLMN OPQR ?

P

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LR

Which the line is called diagonal

of a rectangular prism KLMN.

OPQR ?

Diagonal Of Rectangular Prism

Diagonal of rectangular prism is the line of rectangular prism to connected two points on the rectangular prism.

NP

K L

MN

O P

QRKQ

MOHow many? 4

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Diagonal Of Plane

Diagonal plane is the face bounded by two edges are adjacent the same length and parallel.

K L

MN

O P

QR RECTANGULAR PRISM have 6

diagonal of plane

KMQO

NLPR

LMRO

KNQP

KLQR

OPMN

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example Consider the rectangular prism

ABCD.EFGH at right!

a) Write the face on the top of rectangular prism.

b) Determine the diagonal of face on the BCGF face.

c) Write the parallel of edge with AD

d) Consider the diagonal of a rectangular prism at point B and F

e) Consider the diagonal have face EF

a. The face on the top of rectangular prism is EFGH

b. Diagonal of face BCGF are BG and CF

C

G

A

E

B

D

F

H

E

A

c. The parallel edges with AD are BC, FG, EH

d. The diagonal of a rectangular prism at point B and F are HB and FD

e. EFCD is diagonal of plane has face EF

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:.Summarize.:

The face of rectangular prism form

Rectangle

The diagonals of rectangular prism

Intersection in a point and the length is equal.

Diagonal plane of a rectangular prism form

Rectangle

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Given a rectangular prism of ABCD.EFGH has length, width, and height are 12cm, 5cm and 4cm respectively.

Determine :a. The length of diagonal face BDb. The length of diagonal of a rectangular prism HB

DB

HA B

CD

E F

GHa. Since ∆BAD has a

right angle on A, then

BD2 =AB2+AD2 BD2 = 122+52

BD2 =169BD =13b. Since ∆BDH has a right angle on D, thenHB2 =BD2+DH2

HB2 = 132+42

HB2 =169+16HB2 = 185HB =