90 degrees

180 degrees

45 degrees

0 degrees or 360 degrees

135 degrees

225 degrees

270 degrees

315 degrees

30 degrees

60 degrees

120 degrees

150 degrees

210 degrees

240 degrees

300 degrees

330 degrees

polygon

3+ sided figure with straight lines, no overlaps, and it's closed.

rotation

turns figure counter-clockwise around a point

quadrants

four sections in which co-ordinate plane is divided by the x & y axis.

complementary angles

two angles that add up to 90°

supplementary angles

two angles that add up to 180°

regular polygon

polygon whose side lengths AND interior angle measures are equal

irregular polygon

polygon which either has 2 different side lengths or 2 different interior angle measures

right angle

measure of 90°

obtuse angle

measure of more than 90° but less than 180°

straight angle

measure of 180°

acute angle

measure of less than 90°

rhombus

all 4 sides are the same length

parallelogram

opposite sides are parallel

trapezoid

only one pair of sides is parallel