MATH GURU

Find the length of AB

Find the measure of all angles in DEF that it is possible to find.

What is the perimeter of DEF? Explain how you know.

CONTRUCT VIABLE ARGUMENTS. Suppose XYZ-TUV and that XY is the largest side of XYZ. Is it possible to determine side of TUV is the longest? Explain.

Describe the rotation that would move the arrow to these position

1. Pointing up, with the tip at (4,7)

2. Pointing down, with the tip at (0,3)

3. Pointing up, with the tip at (3,0)

Identify the direction of the arrow and the position of the tip after these rotations.

1. 90 counterclockwise about (4, 3)

2. 180 about (2,3)

3. 90 clockwise about (2,0)

Describe a figure that has an angle of rotational symmetry of 10

CONTRUCT VIABLE ARGUMENTS. Do you think it is possible for a figure to have an angle of rotational symmetry of 37? If so, describe the figure. If not, explain why not.

CRITIQUE THE REASONING OF OTHERS. Juan said that he drew a triangle with angles of measure 118, 30 and y. He said that by choosing the correct value of y he could make the triangle an isosceles triangle. Do you agree or disagree? WHY?