User Name Remember Me? Password

 Geometry Geometry Math Forum

 March 10th, 2018, 09:31 AM #1 Banned Camp   Joined: Dec 2017 From: Tel Aviv Posts: 87 Thanks: 3 Rhombus In the picture: http://img2.timg.co.il/forums/47/128...fa71d339c6.png There is a rhombus, A is an angle of the rhombus. A. What will happen if A become a acute angle? B. How I know that A is obtuse angle? C. What will happen if A become a right angle? Thank for solving this. March 10th, 2018, 10:25 AM   #2
Math Team

Joined: Jul 2011
From: Texas

Posts: 2,847
Thanks: 1486

Quote:
 Originally Posted by policer In the picture: There is a rhombus, A is an angle of the rhombus. A. What will happen if A become a acute angle? B. How I know that A is obtuse angle? C. What will happen if A become a right angle? Thank for solving this.
a. the opposite angle will also be acute and equal in measure to angle A

b. looks like $90^\circ < \angle{A} < 180^\circ$ in the diagram

c. the rhombus will become a square March 10th, 2018, 11:10 AM #3 Global Moderator   Joined: Dec 2006 Posts: 20,383 Thanks: 2011 Let's also consider the same questions for a parallelogram ABCD, with internal angles A, B, C and D. (A). If A becomes an acute angle and ABCD remains a parallelogram, B becomes an obtuse angle. (B). You don't know that B is an obtuse angle. If, however, angle A is greater than angle B, angle A must be obtuse. (C). If A becomes a right angle and ABCD remains a parallelogram, ABCD will have become a rectangle as well, and angles B, C and D will also have become right angles. Tags rhombus Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Similar Threads Thread Thread Starter Forum Replies Last Post mared Algebra 4 January 5th, 2014 04:41 AM Albert.Teng Algebra 3 October 24th, 2013 02:28 AM Albert.Teng Algebra 6 November 22nd, 2012 12:03 AM daivinhtran Algebra 3 September 14th, 2011 12:05 AM Mathmen Algebra 1 October 20th, 2008 01:18 PM

 Contact - Home - Forums - Cryptocurrency Forum - Top      