All PSAT Math Resources
Example Questions
Example Question #1 : How To Find The Perimeter Of A 45/45/90 Right Isosceles Triangle
An isosceles triangle has a base of 6 and a height of 4. What is the perimeter of the triangle?
Possible Answers:
None of these
Correct answer:
Explanation:
An isosceles triangle is basically two right triangles stuck together. The isosceles triangle has a base of 6, which means that from the midpoint of the base to one of the angles, the length is 3. Now, you have a right triangle with a base of 3 and a height of 4. The hypotenuse of this right triangle, which is one of the two congruent sides of the isosceles triangle, is 5 units long (according to the Pythagorean Theorem).
The total perimeter will be the length of the base (6) plus the length of the hypotenuse of each right triangle (5).
5 + 5 + 6 = 16
All PSAT Math Resources
Popular Subjects
Physics Tutors in San Diego, MCAT Tutors in Washington DC, Math Tutors in Chicago, LSAT Tutors in San Francisco-Bay Area, LSAT Tutors in San Diego, SAT Tutors in San Francisco-Bay Area, Computer Science Tutors in Philadelphia, Biology Tutors in Los Angeles, Chemistry Tutors in New York City, Computer Science Tutors in Dallas Fort Worth
Popular Courses & Classes
SAT Courses & Classes in Los Angeles, LSAT Courses & Classes in Washington DC, LSAT Courses & Classes in Seattle, MCAT Courses & Classes in Dallas Fort Worth, GRE Courses & Classes in Washington DC, ISEE Courses & Classes in Dallas Fort Worth, ACT Courses & Classes in San Diego, GRE Courses & Classes in Miami, ISEE Courses & Classes in New York City, GMAT Courses & Classes in Washington DC
Popular Test Prep
ISEE Test Prep in Denver, ACT Test Prep in Denver, SSAT Test Prep in Denver, LSAT Test Prep in Atlanta, ACT Test Prep in San Diego, ISEE Test Prep in San Diego, SSAT Test Prep in Miami, ISEE Test Prep in Dallas Fort Worth, ISEE Test Prep in San Francisco-Bay Area, ISEE Test Prep in Seattle