Chapter 7 vocab. Flashcards
Constant of Proportionality
A constant ratio described using equations in the form y=kx, where k is the constant ratio.
Congruent
Figures that have the same size and shape.
Coordinate Plane
A system formed when two number lines meet at a 90 degree angle.
Corresponding Parts
Parts of congruent or similar figures that match.
Cross Products
When you multiply the numerator of one ratio with the denominator of a second ratio.
Customary System
The measurement system used in the United States - feet, inches, ounces, etc.
Dilation
A transformation that enlarges or reduces a figure by a scale factor.
Dimensional Analysis
The process of including units of measurement as factors when you compute.
Indirect Measurement
A type of measurement, like using a shadow, to measure something difficult to measure.
Inverse Proportion
A relationship formed when the product of to variables is a constant.
Measurement Conversion
When a measurement is changed from customary to metric or metric to customary.
Metric System
The decimal measurement system based on multiples of 10.
Nonproportional
A relationship in which the ratios or rates are not constant.
Proportion
An equation stating that two ratios or rates are constant.
Proportional
When the ratios of related terms are equal.
