Topic 7 Review

An enlargement will have a scale factor​ (a)   1

A reduction will have a scale factor ​ (b)   1

• greater than
• less than
• equal to
• greater than or equal to
• less than or equal to

When dilating on the coordinate plane, given the coordinates of the pre-image and a scale factor of 5, how do you find...

a) the coordinates of the new image: ​ (a)   the (x,y) by 5

b) the angle measures of the new image: ​they are ​ (b)   to the angles of the pre-image

• multiply
• congruent
• subtract
• add
• divide
• similar
• proportional

Corresponding angles are ​ (a)  

Corresponding sides are​ (b)  

• congruent
• proportional
• bigger
• smaller
• bisected
• perpendicular

• 
• 
• 
• 

For a dilation with a scale factor greater than 1, how do the angles and side lengths of the pre-image relate to the angles and side lengths of the image?

• 
• 
• 
• 

Which of the following IS NOT a way to prove triangles similar

• ~AA

• ~SAS

• ~SSS

• ~ASA

Triangle Midsegment Theorem: If a segment joins the midpoint of two sides of a triangle, then the segment is parallel to the third side and is half as long.

Match the following based on the triangle midsegment theorem.

• EC

• DE

• BC

Determine if the scale factor would create an enlargement, reduction, or congruence

Groups:

(a) Enlargement

,

(b) Reduction

,

(c) Congruence

• 1

• 3.5

• .6