Unit 2 Math

Reflection

A transformation that "flips" a figure over a mirror or reflection line.

Dilation

A transformation that changes the size of an object, but not the shape.

Inequalities

Algebraic statements that have ≠, <, >, ≤, or ≥ as their symbols of comparison.

corresponding angles

Angles in the same place on different lines

Alternate Exterior Angles Converse Theorem

If two lines are cut by a transversal so that alternate exterior angles are congruent, then the lines are parallel.

perimeter

The distance around a figure

Exterior Angle Theorem

The measure of an exterior angle of a triangle is equal to the sum of the measures of the two nonadjacent interior angles.

supplementary angles

Two angles whose sum is 180 degrees

alternate interior angles

nonadjacent interior angles that lie on opposite sides of the transversal

rotate

to turn

complementary angles

two angles whose measures have a sum of 90 degrees

vertical angles

two nonadjacent angles formed by two intersecting lines