OpenUp 8th Math 2.8 Review

Triangle A has two angles that measure 53 degrees and 71 degrees. Triangle B has two angles that measure 53 degrees and 71 degrees. Are the triangles similar?

• yes

• no

Triangle C has two angles that measure 90 degrees and 37 degrees. Triangle D has two angles that measure 90 degrees and 53 degrees. Are the triangles similar?

• yes

• no

Triangle E has two angles that measure 63 degrees and 45 degrees. Triangle F has two angles that measure 14 degrees and 71 degrees. Are the triangles similar?

• yes

• no

Triangle G has one angle that measure 121 degrees. Triangle H has one angle that measure 70 degrees. Are the triangles similar?

• yes

• no

True or False? All equilateral triangles are similar.

• true because they all have the same angle measures

• false because they all have the same angle measures

• true because they all have the same side measures

• false because they all have the same side measures

In the figure, line BC is parallel to line DE. Explain why triangle ABC is similar to triangle ADE.