Reflecting Triangles and Rectangles

This shape is....

• 2D

• 3D

Find the perimeter of this shape

• 81 km

• 85 km

• 91 km

• 95 km

Find the area of the figure shown.

• 34 units²

• 960 units²

• 220 units²

• 480 units²

Triangle ABC was reflected about the y-axis to form triangle YXZ.

The interior angles A and Y are

• obtuse

• complementary

• congruent

• supplementary

A triangle with vertices at (1,1), (9,2), and (3,5) is reflected on the x-axis. Plot ALL THREE vertices of the reflected triangle.

Describe the transformation in the image

• Translation

• Reflection

• Rotation

To perform a reflection you need to know the...

• scale factor

• line of reflection

• rotational symmetry

A triangle in Quadrant II is going to be reflected over the y-axis. Which of the following is a true statement?

• The image will be in Quadrant III.

• The orientation of the figure will not change.

• The orientation of the vertices will change.

• The image and the pre-image will not be congruent.

A sequence of transformations is applied on triangle ABC to obtain a congruent triangle A'B'C'. Which of these sequences are correct?

• Triangle ABC is rotated 180° clockwise.

• Triangle ABC is reflected about the y-axis.

• Triangle ABC is translated 6 units right and 2 units down.

• Triangle ABC is reflected about the x-axis.