Angle Relationships and Triangles

Front

What are vertical angles?

Back

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

Tags

CCSS.7.G.B.5

Front

Define complementary angles.

Back

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

Tags

CCSS.7.G.B.5

Front

Define supplementary angles.

Back

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

Tags

CCSS.7.G.B.5

Front

What are corresponding angles?

Back

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

Tags

CCSS.8.G.A.5

Front

What is the relationship between angles formed by a transversal and parallel lines?

Back

When a transversal intersects parallel lines, several angle relationships are formed, including corresponding angles, alternate interior angles, and alternate exterior angles.

Tags

CCSS.8.G.A.5

Front

If angle 4 is 70 degrees, what is the measure of angle 6 if lines are parallel?

Back

Angle 6 is also 70 degrees because they are corresponding angles.

Tags

CCSS.8.G.A.5

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is always 180 degrees.

Tags

CCSS.8.G.A.5

Front

If one angle of a triangle is 90 degrees, what type of triangle is it?

Back

It is a right triangle.

Tags

CCSS.4.G.A.2

Front

What is an exterior angle of a triangle?

Back

An exterior angle of a triangle is equal to the sum of the two opposite interior angles.

Tags

CCSS.8.G.A.5

Front

If angle 1 is 49 degrees, what is the measure of angle 2 if they are complementary?

Back

Angle 2 is 41 degrees because 49 + 41 = 90.

Tags

CCSS.7.G.B.5