I can apply transformations to a polygon on a grid if I know the coordinates of its vertices.
12
I can find unknown angle measures by reasoning about complementary or supplementary angles.
I can recognize when adjacent angles are complementary or supplementary.
If I have two parallel lines cut by a transversal, I can identify alternate interior angles and use that to find missing angle measurements.
13
I can determine whether three angles could make a triangle using their sum.
14
I can explain using pictures why the sum of the angles in any triangle is 180 degrees.
15
I can show that the 3 side lengths that form a triangle cannot be rearranged to form a different triangle.
I can show that the 4 side lengths that form a quadrilateral can be rearranged to form different quadrilaterals.
I can show whether or not 3 side lengths will make a triangle.
16
Given two angle measures and one side length, I can draw different triangles with these measurements or show that these measurements determine one unique triangle or no triangle.
17
Given two side lengths and one angle measure, I can draw different triangles with these measurements or show that these measurements determine one unique triangle or no triangle.
18
I can repeatedly use rigid transformations to make interesting repeating patterns of figures.
I can use properties of angle sums to reason about how figures will fit together.