Front

What is a ray in geometry?

Back

A ray is a part of a line that starts at a point and extends infinitely in one direction.

Front

What does it mean for triangles to be similar?

Back

Triangles are similar if their corresponding angles are congruent and their corresponding sides are proportional.

Front

If \( \Delta DEF \cong \Delta RST \), what can we conclude about \( \angle T \)?

Back

\( \angle T \cong \angle F \)

Front

What are collinear points?

Back

Collinear points are points that lie on the same straight line.

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

Define a point in geometry.

Back

A point is a precise location or position in space that has no size or dimension.

Front

What is a line segment?

Back

A line segment is a part of a line that has two endpoints.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

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.

Front

What is a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.