Geometry Semester 1 Exam Review

Front

What is the definition of a midpoint in geometry?

Back

A midpoint is a point that divides a line segment into two equal parts.

Front

If T is the midpoint of SU and ST = 36, what is the length of SU?

Back

SU = 2 * ST = 2 * 36 = 72.

Front

What does the Side-Angle-Side (SAS) congruence theorem state?

Back

The SAS theorem states that if two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle, then the two triangles are congruent.

Front

How can you determine if two lines are parallel using a diagram?

Back

Two lines are parallel if they never intersect and are equidistant from each other at all points.

Front

What is a median in a triangle?

Back

A median is a line segment that connects a vertex of a triangle to the midpoint of the opposite side.

Front

If two triangles are congruent, what can be said about their corresponding sides and angles?

Back

If two triangles are congruent, their corresponding sides and angles are equal.

Front

What is the formula for finding the length of a segment when given the coordinates of its endpoints?

Back

Length = √((x2 - x1)² + (y2 - y1)²).

Front

What is the significance of congruent triangles in geometry?

Back

Congruent triangles are significant because they allow us to infer properties about the triangles, such as side lengths and angles.

Front

What is the difference between parallel lines and intersecting lines?

Back

Parallel lines never meet, while intersecting lines cross at one point.

Front

How do you identify congruent triangles in a diagram?

Back

Look for equal corresponding sides and angles, or use congruence theorems like SAS, SSS, or ASA.