Performance Task: Tessellations — Unit test Answers

Point O is the center of dilation. Triangle D E F is dilated to create smaller triangle D prime E prime F prime. The length of O F prime is 3. The length of F prime F is 7.

Which statement describes the order of rotational symmetry for an isosceles triangle?

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Which diagram has all the correct lines of reflectional symmetry for the rectangle?

Quadrilateral FGHJ is dilated according to the ruleDO,(x,y) to create the image quadrilateral F'G'H'J', which is not shown.

The vertices of triangle ABC are A(5,2), B(–1,–6) and C(1,5). If ΔDEF is similar to ΔABC and , which could be the coordinates of vertices D and E?

Which graph shows a dilation?

On a coordinate plane, 2 triangles are shown. Triangle A B C has points (negative 1, negative 1), (2, negative 1), and (negative 1, negative 5). Triangle R S T has points (1, 1), (1, 5), and (4, 1).

Triangle QRS is to be dilated using the rule .

Triangles ABC and ADE are similar, as shown. Which must be true? Check all that apply.

On a coordinate plane, 2 triangles are shown. Triangle A B C has points (negative 3, negative 1), (negative 1, 2), and (negative 5, 3). Triangle R S T has points (1, 1), (3, 4), and (5, 0).

Triangle ABC is rotated 45° about point X, resulting in triangle EFD.