Proving Similar Figures

The two right triangles below are similar. What is x, the missing side length in triangle DEF? 

• 3.75

• 9.75

• 10

• 12

Tags

CCSS.HSG.SRT.A.2

Lance the alien is 5 feet tall.  His shadow is 8 feet long.  At the same time of day, a tree's shadow is 32 feet long.  What is the height of the tree?

• 20 feet

• 24 feet

• 29 feet

• 51 feet

Tags

CCSS.HSG.SRT.B.5

Determine whether the triangles are similar by AA~, SSS~, SAS~, or not similar.

• AA

• SSS

• SAS

• no similar

Tags

CCSS.HSG.SRT.B.5

Determine if the triangles are similar and if they are, what postulate proves them to be similar.

• Not Similar

Tags

CCSS.HSG.SRT.B.5

Determine if the triangles are similar and if they are, what postulate proves them to be similar.

• Not Similar

Tags

CCSS.HSG.SRT.B.5

Two objects that are the same shape but not the same size are _______.

• Congruent

• Vertical

• Similar

• Complementary 

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Sides in similar figures must be proportional.  

• True

• False 

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Gwen scans a photo that is 4 in. wide by 6 in. long into her computer. If she scales the length down to 3 in., how wide should the similar photo be?

• 3 in

• 2 in.

• 4 in

• 1 in

Tags

CCSS.7.G.A.1

A tree is 12 feet tall and casts a shadow 9 feet long. A building nearby casts a shadow that measures 24 feet. How tall is the building? (Draw a picture, set up a proportion)

• 24 feet

• 21 feet

• 27 feet

• 32 feet

Tags

CCSS.HSG.SRT.B.5

All corresponding sides are proportional (same ratio) in similar figures.

• True

• False

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6