Solving Modeling Problems with Similar and Congruent Triangles

In the realm of geometry, solving modeling problems with similar and congruent triangles stands as a fundamental concept essential for various applications. Whether in architectural design, engineering, or physics, understanding the principles of similarity and congruence enables precise analysis and problem-solving. Similar triangles possess proportional corresponding sides, facilitating the scaling of objects or structures in models. Meanwhile, congruent triangles exhibit identical angles and side lengths, ensuring precise replication or comparison within geometric configurations. Mastery of these concepts empowers practitioners to accurately model and predict real-world scenarios with geometric precision and efficiency.

Questions
  • Check if the following are triangles? If yes name them? 1) #ΔTAR, ∠T= 184 and ∠A = 86# 2) #ΔDEZ, ∠D = 60 and ∠E = 60# 3) #ΔCHI, ∠C = 30, ∠H = 60 and ∠I = 90# 4)#ΔJMR, ∠J = 5, ∠M = 120 and ∠R = 67# 5) #ΔKLM, bar(KL) = bar(LM) = bar(MK)#
  • Nanako said she drew a square pyramid and that all of the faces are triangles. Is this possible?
  • Name the following triangle: #ΔQRS#, where #m∠R = 94, m∠Q = 22 and m∠S = 90#?
  • The lengths of two sides of a triangle are 6 and 13. Which can be the length of the third side?
  • What is the value of x? Enter your answer in the box. x = cm
  • Enter the proportional segment lengths into the boxes to verify that ¯¯¯QS¯∥MN¯ . ___ /1.5= ___ / ___?
  • Your teacher made 8 triangles he need help to identify what type triangles they are. Help him?: 1) #12, 16, 20# 2) #15, 17, 22# 3) #6, 16, 26# 4) #12, 12, 15# 5) #5,12,13# 6) #7,24,25# 7) #8,15,17# 8) #9,40,41#
  • If two polygons are similar, How can you find the scale factor from one polygon to the other?
  • The total surface area of two similar cuboids are 500cm^2 and 800cm^2. If the width of one of the cuboids is 10cm, what are the two possible widths of the other cuboid? How do I get the working? Thanks for the help!
  • Two similar cones have a combined volume of 400 in³, and the larger cone holds 80 in.³ more than the smaller cone, which has a radius of 3 in. What is the radius of the larger cone?
  • A 6 ft tall tent standing next to a cardboard box casts a 9 ft shadow. If the cardboard box casts a shadow that is 6 ft long then how tall is it?
  • Can someone help me solve this question?
  • Two similar solids have a scale factor or 6:7 . What is ratio of their volumes, expressed in lowest terms?
  • Answer question a) why does A = A (t) = 6x^2? ,
  • What is the side length of the largest cube you can create with 729 cubes?
  • If two polygons are similar, how can you find the scale factor from one polygon to the other?
  • How many different geometric models can be defined as a pyramid?
  • Find the triangles with angles #A, B, C# and correspondingly opposite sides #a,b.c# such that #(aA+bB+cC)/(a+b+c)# has a minimum. Does this expression have a maximum?
  • Under what conditions on #alpha# do the spheres #x^2+y^2+z^2+alphax-y=0# and #x^2+y^2+z^2+x+2z+1=0# intersect each other at an angle of #45^circ#?
  • 125 small cubes like the one below are arranges to make a larger cube. How many small cubes make up the width?