Angle Relationships (Identification/Algebraic Relation)

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal in measure.

Front

Identify the relationship: ∠1 and ∠5 are what type of angles?

Back

∠1 and ∠5 are corresponding angles.

Front

What is the equation to solve for x if m∠1 = 33° and m∠2 = 7x + 5°?

Back

The correct equation is 33 = 7X + 5.

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180°.

Front

If two angles are supplementary, what is their relationship?

Back

Supplementary angles are two angles whose measures add up to 180°.

Front

If m∠1 = 11x - 7° and m∠5 = 7x + 9°, how do you find x?

Back

Set the equations equal: 11x - 7 = 7x + 9 and solve for x.

Front

What are corresponding angles?

Back

Corresponding angles are angles that are in the same position on two parallel lines cut by a transversal. They are equal.

Front

What is the value of x if 33 + 7x + 5 = 180?

Back

To find x, simplify the equation: 7x = 180 - 38, so x = 20.

Front

What is the definition of complementary angles?

Back

Complementary angles are two angles whose measures add up to 90°.

Front

If ∠2 and ∠4 are alternate interior angles, what can be said about their measures?

Back

If ∠2 and ∠4 are alternate interior angles, they are equal if the lines are parallel.