#133- Angle and Triangle Practice

Front

What is an angle?

Back

An angle is formed by two rays (sides) that share a common endpoint (vertex).

Front

What is a triangle?

Back

A triangle is a polygon with three edges and three vertices.

Front

What are the types of angles based on their measures?

Back

Acute (less than 90°), Right (exactly 90°), Obtuse (greater than 90° but less than 180°), Straight (exactly 180°).

Front

What is the Triangle Inequality Theorem?

Back

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

Front

What are vertical angles?

Back

Vertical angles are angles that are opposite each other when two lines intersect.

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°.

Front

What is an acute triangle?

Back

An acute triangle is a triangle where all three angles are acute (less than 90°).

Front

What is an obtuse triangle?

Back

An obtuse triangle is a triangle that has one angle that is obtuse (greater than 90°).

Front

What is a right triangle?

Back

A right triangle is a triangle that has one angle that is exactly 90°.

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle where all three sides are of different lengths.