
Since ABCD is a parallelogram, segment BC is parallel to segment AD according to the definition of a parallelogram.
By the same token, segment AB is parallel to segment DC according to the definition of a parallelogram.
Line AC is a transversal for segment BC and segment AD. This transversal creates alternate interior angles 1 and 4 which are equal as shown below.
By the same token, Line AC is a transversal for segment AB and segment DC. This transversal creates alternate interior angles 2 and 3 which are equal.
Moreover, segment AC ≅ segment AC by reflexive property.Summary
May 21, 18 09:24 AM
Explore exponential and logarithmic functions with these easy to follow math lessons
New math lessons
Your email is safe with us. We will only use it to inform you about new math lessons.
May 21, 18 09:24 AM
Explore exponential and logarithmic functions with these easy to follow math lessons
Our Top Pages
Formula for percentage
Compatible numbers
Basic math test
Basic math formulas
Types of angles
Math problem solver
Algebra word problems
Surface area of a cube
Finding the average
Scale drawings
Everything you need to prepare for an important exam!
K12 tests, GED math test, basic math tests, geometry tests, algebra tests.
Real Life Math Skills
Learn about investing money, budgeting your money, paying taxes, mortgage loans, and even the math involved in playing baseball.