Similar Triangles with Angles

Which triangles are similar to triangle A?

• B

• C

• Both

• None

Tell whether the triangles are similar. Explain.

• Yes because it looks like it

• Yes because 36 + 72 + 33 = 180

• No because 36 + 72 + 33 =/= 180

• Def not

Tell whether the triangles are similar. Explain.

• Yes because why not

• No because x = 107

• Yes because the triangles have at least two congruent angles.

• Nah

Find the value of x if the two triangles are similar.

• x = 45

• x = 3

• x = 12

• x = 90

Are the triangles similar? Explain.

• No, because only one angle of the triangles is congruent.

• Yes, because two of the angles are congruent.

• No, because only one triangle has a right angle.

• Not enough information to determine.

Which triangles are similar to triangle A?

• B

• C

• Both

• None

Choose each angle measure that is one of the angles of these similar triangles. Select all that apply.

• 24º

• 51º

• 54º

• 75º

• 81º

△ABC is congruent to △PQR as shown in the image. Two angles that are congruent and have the same size are ...

• ∠A = ∠Q

• ∠A = ∠R

• ∠C = ∠P

• ∠B = ∠Q

Are the triangles similar? Explain.

• No, because only one angle of the triangles is congruent.

• Yes, because two of the angles are congruent.

• No, because only one triangle has a right angle.

• Not enough information to determine.

Which triangles are similar to triangle A?

• B

• C

• Both

• None