Similar Triangle Proofs

What similarity theorem would prove that these triangles are similar?

• SAS∼
• SSS∼
• AA∼
• Side Splitter

Are the triangles similar?

• Yes
• No

State the postulate that proves these triangles are similar.

• SSS
• AA
• SAS
• Not similar

Find side length X.

• 30
• 25
• 15
• 40

Find side length X.

• 16
• 18
• 2.4
• 15

How do these triangles appear to be similar?

• AA
• SAS
• SSS
• Not Similar

How do these triangles appear to be similar?
(Hint: Look for non-labeled parts!)

• AA
• SAS
• SSS
• Not Similar

Mrs. Ashley used similar triangles to make a design.  Which statement about the triangles in the design must be true?

• They are the same size and shape.
• They are the same size but different shapes.
• They have corresponding angles that are congruent.
• They have corresponding sides that are congruent.

If two figures are similar, the corresponding sides are ______________.

• equal
• congruent
• proportional
• none of these

Sides in similar figures must be proportional.  

• True
• False