Understanding similarity

Is Triangle ACB similar to triangle DCE?

• No, I can't show that 2 corresponding angle pairs are congruent.

• Yes, because if I subtract 180 - (21+36) ACB is 123, so I have two pairs of congruent angles for AA Similarity.

Finish the following similarity statement: Figure DEFGHI ∼ Figure ​ (a)  

• DEFGHI
• D'E'F'G'H'I'
• ABCDEF
• A'B'C'D'E'F'

Figure I and Figure II are similar pentagons.

Which proportion must be true?

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• 
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11. ΔABC is a right triangle with the dimensions shown. Which of the following figures is similar to ΔABC?

• FIGURE A
• FIGURE B
• FIGURE C
• FIGURE D

What is the corresponding side to line segment AC?

• Line Segment CB
• Line Segment AB
• Line Segment XZ
• Line Segment ZY

Quad $TQRS\sim BCDE$ . Which would be a set of corresponding sides?

• $\overline{TQ}$ and $\overline{BE}$

• $\overline{TS}$ and $\overline{CD}$

• $\overline{RS}$ and $\overline{BC}$

• $\overline{QR}$ and $\overline{CD}$

The AA (Angle Theorem) states that if two angles of one triangle are congruent to two angles of another triangle, then the triangles are similar.

• True
• False

Find the missing side of the large triangle.

• 13
• 36
• 12
• 10

 $\Delta PRQ\ \sim\ \Delta DEF$  
What is   $m\angle R$  ?

• 35

• 89

• 56

• 40

Are these figures similar?

• yes
• no
• i don't know
• not enough information