# Straight Lines - PowerPoint PPT Presentation

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Straight Lines. X. x. Y. 55 °. Z. If XYZ in the figure above is a right angle, what is the value of x ? (A)155(D)125 (B)145(E)110 (C)135. Parallel Lines. y. k. z. x. m. In the figure above, if the lines k and m are parallel, what is the value of x? (1)y = 120

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Straight Lines

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### Straight Lines

X

x

Y

55°

Z

If XYZ in the figure above is a right angle, what is the value of x?

(A)155(D)125

(B)145(E)110

(C)135

### Parallel Lines

y

k

z

x

m

In the figure above, if the lines k and m are parallel, what is the value of x?

(1)y = 120

(2)z = 60

### Degrees

S

T

U

R

Square RSTU shown above is rotated in a plane about its center in a clockwise direction the minimum number of degrees necessary for T to be in position where S is now shown. The number of degrees through which RSTU is rotated is:

(A)135(D)270

(B)180(E)315

(C)225

### Right Triangle 1

• Which of the following groups of numbers could be the lengths of the sides of a right triangle?

• I.1, 4,

• II.4,7,

• III.4,9,6

• I only(D) II and III only

• I and II only (E) I, II, and III

• I and III only

### Right Triangle 2

y

c

a

x

b

In the triangle above, does a2 + b2 = c2?

(1)x + y = 90

(2)x = y

### Right Triangle 3

In HGM, what is the length of side HM ?

(1)HG = 5

(2)GM = 8

### Right Triangle 4

A

B

X

C

If the figure above, three squares and a triangle have areas of A, B, C and X as shown. If A = 144, B = 81 and C = 225, then X =

(A)150(C)80(E)36

(B)144(D)54

### 3:4:5 Right Triangle 1

• Dan and Karen, who live 10 miles apart, meet at a café that is directly east of Karen’s house. If the café is 2 miles closer to Dan’s house than to Karen’s house,and Dan lives directly north of the café, how many miles is the café from Karen’s house?

• 6

• 7

• 8

• 9

• 10

### 3:4:5 Right Triangle 2

• A ladder 25 feet long is leaning against a wall that is perpendicular to level ground. The bottom of the ladder is 7 feet from the base of the wall. If the top of the ladder slips down 4 feet, how many feet will the bottom of the ladder slip?

• 4

• 5

• 8

• 9

• 15

### 3:4:5 Right Triangle 3

In XYZ, what is the length of YZ?

(1)The length of XY is 3.

(2)The length of XZ is 5.

### Isosceles Triangle

B

x

D

30

50

C

A

In the figure above, DA = DB = DC. What is the value of x ?

(A)10

(B)20

(C)30

(D)40

(E)50

### 30-60-90 Triangle

K

60

30

J

L

In  JKL shown above, what is the length of segment JL?

(1)JK = 10

(2)KL = 5

### 45-45-90 Triangle

S

U

45

60

V

T

R

In the figure above, segments RS and TU represent two positions of the same ladder leaning against the side SV of a wall. The length TV is how much greater than the length of RV?

(1)The length of TU is 10 meters

(2)The length of RV is 5 meters

### Similar Triangle 1

C

B

x

A

In the figure above, line AC represents a seesaw that is touching level ground at point A. If B is the midpoint of AC, how far above the ground is point C ?

(1)x = 30

(2)Point B is 5 feet above the ground.

### Similar Triangle 2

In PQS to the right, if PQ = 3 and PS = 4, then PR =

(A)9/4

(B)12/5

(C)16/5

(D)15/4

(E)20/3

Q

R

3

S

P

4

### Area Rectangle

x

x

x

x

50 cm

x

x

x

x

84 cm

The figure above represents a rectangular desk blotter in a holder with dimensions shown. If x = 8 centimeters, what is the area, in square centimeters, of the shaded portion of the blotter?

(A)4200(D)4072

(B)4184(E)3944

(C)4124

### Area Circle 1

The figure above represents the floor of a square foyer with a circular rug partially covering the floor and extending to the outer edges of the floor as shown. What is the are of the foyer that is not covered by the rug?

(1)The area of the foyer is 9 square meters.

(2)The area of the rug is 2.25 square meters.

### Area Circle 2

If the circumference of a circular region is c, which of the following represents the area of that circular region?

(A)(D)

(B)(E)

(C)

### Area Circle 3

30 m

40 m

The figure above represents a rectangular parking lot that is 30 meters by 40 meters and an attached semicircular driveway that has an outer radius of 20 meters and an inner radius of 10 m. If the shaded region is not included, what is the area, in square meters, of the lot and driveway?

(A)1350(C)1200 + 300 (E)1200 + 150 

(B)1200 + 400 (D)1200 + 200 

### Perimeter Cone

The outline of a sign of an ice-cream store is made by placing 3/4 of the circumference of a circle with radius 2 ft on top of an isosceles triangle with height 5 feet, as shown to the right. What is the perimeter, in feet of the sign?

(A)

(B)

(C)

(D)

(E)

5 ft

y

S (a,b)

x

O

T (c,0)

R (1,0)

### Coordinate Geometry

In the rectangular coordinate system to the right, the area of RST is

(A)bc/2

(B)b(c - 1)/2

(C)c(b -1)/2

(D)a(c - 1)/2

(E)c(a -1)/2

y

Q(c, d)

x

P(a, b)

R

### Coordinate Geometry

In the figure on the right, segments PR and QR are each parallel to one of the rectangular coordinate axis. Is the ratio of the length of QR to the length of PR equal to 1?

(1)c = 3 and d = 4.

(2)a = -2 and b = -1