1.5.24 U3L8 Are they all similar?

Is Rectangle Q similar to Rectangle R?

Why or Why not?

• Yes! The corresponding angles and congruent.

• No! They have different areas.

• No! The corresponding angles are congruent but the corresponding sides aren't proportional.

• Yes! They are both rectangles that are different sizes

Are all rectangles similar?

• Yes! They are the same shape but different sizes.

• Yes! Rectangles have all right angles so all angles are congruent.

• No! The corresponding angles aren't congruent.

• No! The corresponding angles are congruent but the corresponding sides are not always proportional.

In a proof of similar figures you must prove 2 things:

• A series of rigid motions puts one shape on top of the other proving Corresponding Angles are Congruent

• Corresponding Sides are Congruent

• A series of rigid motions only.

• Corresponding Angles are Proportional

• A dilation places one shape on top of the other proving the corresponding angles are congruent.

A series of rigid motions that puts one figure over another proves...

• Corresponding Sides are Proportional

• Corresponding Angles are Proportional

• Figures are similar

• Corresponding Angles are Congruent

Which of the following shapes are always similar?

• Right Triangles

• Isosceles Triangles

• Equilateral Triangle

• Circles

• Rectangles

Which step is incorrect?

• Step 2

• Step 3

• Step 4

• Step 5

• Step 6

Answer explanation

Which statement provides a valid justification for why all circles are similar?

• A

• B

• C

• D

Which pair of polygons are similar?

• 
• 
• 
• 

AC = 6
Select all sequences of transformations that show ABC and AED are similar:

• Dilate triangle AED using center A by a scale factor of 2 then reflect over AC

• Reflect triangle AED over line AC, then dilate using center A by a scale factor of 2

• Translate triangle AED by directed line segment DC , then dilate using center C by scale factor 2.