Geometry 1st Semester Review 1A

Front

What is the definition of congruent triangles?

Back

Triangles that have the same size and shape, meaning their corresponding sides and angles are equal.

Front

What does SSS stand for in triangle congruence?

Back

Side-Side-Side; a method to prove triangles are congruent if all three sides of one triangle are equal to the three sides of another triangle.

Front

What does SAS stand for in triangle congruence?

Back

Side-Angle-Side; a method to prove triangles are congruent if two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle.

Front

What is the midpoint formula?

Back

The midpoint M of a line segment with endpoints (x1, y1) and (x2, y2) is given by M = ((x1 + x2)/2, (y1 + y2)/2).

Front

How do you find the range of possible values for x in an inequality?

Back

Identify the constraints given in the problem and express them in inequality form to determine the valid range.

Front

What is the definition of a straight angle?

Back

An angle that measures exactly 180 degrees.

Front

What does HL stand for in triangle congruence?

Back

Hypotenuse-Leg; a method to prove right triangles are congruent if the hypotenuse and one leg of one triangle are equal to the hypotenuse and one leg of another triangle.

Front

What is the definition of collinear points?

Back

Points that lie on the same straight line.

Front

What does it mean for lines to be perpendicular?

Back

Two lines that intersect at a right angle (90 degrees).

Front

How do you determine if two angles are complementary?

Back

Two angles are complementary if the sum of their measures is 90 degrees.