Question

The two right scalene triangles shown are similar , but not congruent. Which statement about the triangles is not true

Answer 1

Third choice.

The right correspondence is
`\angle CDB \cong \angle ECD`

Explanation:

The third choice is not true, that is

`\angle CDB` NOT corresponds to
`\angle ECD`

If
`\triangle CBD \sim \triangle CDE`, then corresponding sides are proportional, and corresponding angles are congruent. The corresponding angle of
`\angle CDB` is

`\angle CDB \cong \angle ECD`

Therefore, the third option shows a wrong correspondence, that's the right choice in this case, because it doesn't express a valid correspondence.