My Math Forum  

Go Back   My Math Forum > High School Math Forum > Algebra

Algebra Pre-Algebra and Basic Algebra Math Forum

LinkBack Thread Tools Display Modes
September 30th, 2012, 04:36 AM   #1
Senior Member
Joined: Sep 2012

Posts: 201
Thanks: 1

Similar triangles

I am having a bit of trouble finding the length of A-D in the triangle that I have attached to the post. Could someone show how to go about this question.

Question: The diagram shows two similar triangles ABC and BCD. BC=7cm, DC=5cm and angle BAD= angle CBD. Calculate length AD.

I feel I should be to Pythagoras but as it is not a right hand triangle I have no idea where to start.
Attached Images
File Type: jpg Mathforums.jpg (25.8 KB, 57 views)
taylor_1989_2012 is offline  
September 30th, 2012, 05:36 AM   #2
Math Team
agentredlum's Avatar
Joined: Jul 2011
From: North America, 42nd parallel

Posts: 3,372
Thanks: 233

Re: Similar triangles

If the triangles are simillar then

There is another possibility, AD = 0 , then ABC is exactly on top of DBC or vice versa.

agentredlum is offline  

  My Math Forum > High School Math Forum > Algebra

similar, triangles

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Area of Similar Triangles Raye Algebra 1 November 27th, 2013 02:42 PM
Similar Triangles strangepath Algebra 7 April 15th, 2013 10:50 PM
Similar Triangles III julian21 Algebra 2 November 14th, 2010 08:51 AM
Similar Triangles II julian21 Algebra 1 November 14th, 2010 08:44 AM
Similar Triangles julian21 Algebra 1 November 14th, 2010 08:40 AM

Copyright © 2019 My Math Forum. All rights reserved.