Understanding similarity

What does it mean when shapes are similar?

• Similar shapes are figures with the same shape but not the same size.

• similar shapes are figures with acute angles.

• similar shapes are figures with the same shape and size.

• non of the above.

What does it mean for two shapes to be similar?

• Same shape, but different size.
• Same size and same shape.
• Their angles add up to 180^o.
• They are congruent.

If two figures are similar, what can we say about their corresponding angles?

• Corresponding angles are complementary.

• Corresponding angles are not equal.

• Corresponding angles are supplementary.

• Corresponding angles are equal.

Sides in similar figures must be proportional.  

• True
• False 

Similar figures have _____ angles.

Which of the following polygons are similar?

• 
• 

Figure B is a scaled copy of Figure A. Select all of the statements that must be true.

• Figure B is larger than Figure A.

• Figure B has the same number of edges as Figure A.

• Figure B has the same perimeter as Figure A.

• Figure B has the same number of angles as Figure A.

• Figure B has angles with the same measures as Figure A.

Two objects that are the same shape but different sizes are _______.

• Congruent
• Similar
• Neither

Two objects that are the same shape, but not the same size are _______________________.

• Complementary

• Similar

• Congruent

• Vertical

Determine whether each pair of solids is similar, congruent or neither. If the solids are similar, state the scale factor