1.
says that two things are equal
2.
compares two values, showing if one is less than, greater than, or simply not equal to another value.
3.
A symbol for a value we don't know yet. It is usually a letter like x or y.
4.
Two angles that add up to 180 degrees
5.
Two angles that add up to 90 degrees
7.
An angle which is equal to 90°
8.
An angle is more than 90° but less than 180°
9.
An angle that is more than 180° but less than 360°
10.
An angle which is equal to 180°
11.
An image or shape as it would be seen in a mirror. (A flip)
12.
"Sliding": moving a shape without rotating or flipping it.
13.
A circular movement; has a central point that stays fixed and everything else moves around that point in a circle.
14.
Changing a shape using turns, flips, slides, or resize.
15.
To resize something, using a scale to make a figure bigger or smaller.
16.
When part of an original figure matches up with part of a copy. These could be points, segments, angles, or distances.
17.
When one shape can become another after a resize, flip, slide or turn.
18.
A triangle with three sides of equal length. All the angles are 60 degrees.
19.
A triangle with two equal sides. The angles opposite the equal sides are also equal.
20.
A triangle with all sides of different lengths. All angles are different, too.
