Angle Relationships

Front

Triangle angle sum

Back

180 degrees

Front

Quadrilateral angle sum

Back

360 degrees

Front

Scalene triangle?

Back

A triangle with no equal side lengths and no equal angle measurements.

Front

What is an isosceles triangle?

Back

A triangle with 2 equal side lengths and 2 equal angle measurements.

Front

Equilateral triangle

Back

A triangle with 3 equal side lengths and 3 equal angle measurements.

Front

What does congruent (⩭) mean?

Back

Objects have the same size and same shape.

Front

Vertical Angles

Back

Vertical angles (across from each other) are congruent.

Front

Supplementary angles

Back

Angles that add to 180 degrees.

Front

When two lines are parallel (∥)...

Back

Alternate interior angles are congruent and corresponding angles are congruent.

Front

What are perpendicular lines (⟂)?

Back

Lines that intersect and form right angles (90°).