Angle Relationships and Triangle Constraints

Flashcards covering angle relationships (vertical, adjacent, complementary, supplementary) and triangle constraints based on side lengths and angle sums.

Vertical Angles

A pair of opposite angles formed by intersecting lines; vertical angles are congruent.

Adjacent Angles

Two angles with a common side and vertex. If the two angles form a straight line, they are supplementary and have a sum of 180 degrees.

Complementary Angles

A pair of angles that have a sum of 90 degrees.

Supplementary Angles

A pair of angles that have a sum of 180 degrees.

Triangle Constraints (Side Lengths)

The sum of any two side lengths of a triangle must be greater than the third side length.

Triangle Constraints (Angle Sum)

The sum of the three angles in a triangle is 180 degrees.