Geometry 1st Semester Review (through 5-1)

Front

What is the measure of angle GHK if m∠JHG = 161°?

Back

m∠GHK = 80.5°.

Front

What is the slope of a line perpendicular to y = -2x + 1?

Back

The slope of a perpendicular line is the negative reciprocal, which is 1/2.

Front

How do you determine if two lines are perpendicular?

Back

Two lines are perpendicular if the product of their slopes is -1.

Front

What is the SAS (Side-Angle-Side) criterion for triangle congruence?

Back

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 missing information to determine if triangles are congruent by SAS?

Back

You need to know if ∠B ≅ ∠M.

Front

How do you find the equation of a line given a point and a slope?

Back

Use the point-slope form: y - y1 = m(x - x1).

Front

What is the formula for the slope of a line given two points (x1, y1) and (x2, y2)?

Back

The slope m = (y2 - y1) / (x2 - x1).

Front

If two angles are complementary, what is the sum of their measures?

Back

The sum of complementary angles is 90°.

Front

What is the definition of parallel lines?

Back

Parallel lines are lines in a plane that never meet and have the same slope.

Front

What is the definition of a transversal?

Back

A transversal is a line that intersects two or more lines at different points.