Topic 7 Geometry

Triangle ABC will be dilated by a scale factor of 1/2.  What will be the coordinates of C'?

• (-1, -2.5)

• (12, 6)

• (3, -1.5)

• (0, 1.5)

Tags

CCSS.8.G.A.3

Enlargement or reduction?  Find the scale factor!

• It's an enlargement; the scale factor is 3.

• It's a reduction; the scale factor is 1/3.

• It's a reduction; the scale factor is 1/2.

• It's an enlargement; the scale factor is 2. 

Tags

CCSS.8.G.A.3

QR is a midsegment of triangle WUV. What is the length of segment QR?

• 4

• 8

• 16

• 32

Tags

CCSS.HSG.SRT.B.4

Which theorem(s) can be used to prove triangle similarity?

• SAS

• AA

• AAS

• SSS

• HL

Tags

CCSS.HSG.SRT.B.5

What do the arrows on these triangles represent?

• Perpendicular lines

• Parallel lines

• Transversals

• Congruent

Tags

CCSS.HSG.CO.B.7

Dilate Point B by a scale factor of 1/2

• (1.5,-4)

• (-1.5,1)

• (-1,-1.5)

• (-2,-2)

Tags

CCSS.8.G.A.3

Rectangle ABCD is dilated so that the coordinates of C' are (2, -1).  What could be the dilation rule?

• (-2x, +1y)

• (1/2 x, 1/2 y)

• (2x, 2y)

• (x - 2, y - 1)

Tags

CCSS.HSG.CO.A.2

The pair of figures is similar. Find the missing side.

• x = 20

• x = 12

• x = 5

• x = 4

Tags

CCSS.HSG.SRT.A.2

Find the perimeter of the large triangle.

• 24

• 36

• 12

• 54

Find the height of the person using what you know about similar triangles.

• 4 ft

• 6.25 ft

• 1.25 ft

• 5.75 ft

Tags

CCSS.HSG.SRT.B.5