All PSAT Math Resources
Example Questions
Example Question #331 : Plane Geometry
ABCD is a parallelogram. BD = 5. The angles of triangle ABD are all equal. What is the perimeter of the parallelogram?
Possible Answers:
Correct answer:
Explanation:
If all of the angles in triangle ABD are equal and line BD divides the parallelogram, then all angles in triangle BDC must be equal as well.
We now have two equilateral triangles, so all sides of the triangles will be equal.
All sides therefore equal 5.
5+5+5+5 = 20
All PSAT Math Resources
Popular Subjects
English Tutors in New York City, MCAT Tutors in Dallas Fort Worth, GRE Tutors in Houston, English Tutors in Houston, MCAT Tutors in Boston, Calculus Tutors in San Francisco-Bay Area, Physics Tutors in Seattle, MCAT Tutors in Seattle, Statistics Tutors in Seattle, ISEE Tutors in Boston
Popular Courses & Classes
ACT Courses & Classes in San Diego, LSAT Courses & Classes in Chicago, ISEE Courses & Classes in Washington DC, SAT Courses & Classes in Boston, MCAT Courses & Classes in Denver, Spanish Courses & Classes in Boston, ACT Courses & Classes in Washington DC, LSAT Courses & Classes in Philadelphia, ISEE Courses & Classes in Atlanta, LSAT Courses & Classes in San Diego