Triangle Congruence

Triangle congruence is a fundamental concept in geometry that elucidates the conditions under which two triangles are identical in shape and size. By exploring the principles of side-length equality and angle congruence, this topic lays the groundwork for geometric proofs and problem-solving. Understanding triangle congruence is essential in various mathematical applications, providing a systematic approach to establish relationships between different triangles. This concise introduction sets the stage for a deeper exploration of the rules governing triangle congruence, fostering a clear and foundational understanding in the realm of geometric principles.

Questions
  • Solve for x? Show the equation you used and your work.
  • Is it possible to have an obtuse equilateral triangle?
  • Given the 2 sets of figures below, are the pairs of triangles similar for both set a and set b? Why or why not? What is the similarity statement and the scale factor?
  • Why does the sss postulate work?
  • Why can't you prove triangles congruent by using side-side-angle?
  • What do AAS, SSA, SAS, and SSS stand for in geometry?
  • #triangleABC# is isosceles, where AB=BC. If #m angleA= 5x+ 30# and #mangleB= 2x#, then how do you find #mangleC#?
  • The #DeltasABC# and #FGH# shown below are similar. Find #bar(FH)#?
  • What type of triangle is formed by joining the points#D(7, 3), E(8, 1),# and #F(4, -1)#?
  • Mark wants to cut a triangular patch to make an emblem. The pattern for the emblem is a triangle with sides 8, 8, and 10 centimeters long. If Mark wants to make the longest side of the emblem 25 centimeters, how long should the other two sides be?
  • An isosceles triangle has congruent sides of 20 cm. The base is 10 cm. What is the height of the triangle?
  • Can the sides of a triangle have lengths 6, 1 and 6?
  • What is the range of measure of the third side of a triangle that has sides of 10.5 cm and 4 cm?
  • Three security cameras were mounted at the corners of a triangular parking lot. Camera 1 was 158 feet from camera 2, which was 121 feet from camera 3. Cameras 1 and 3 were 140 feet apart. What camera had to cover the greatest angle?
  • Susie is buying tiles for her kitchen floor. The dimensions of her floor are 8 1/2 ft x 4 3/4 ft. She uses rectangular tiles that measure 1/2 foot by 1/4 foot. How many tiles will she need to cover the entire floor?
  • A fully-loaded truck is carrying grain to a storage silo. If the truck is 8 feet wide, 40 feet long, and 4 deep, how many bushels of grain is it carrying?
  • An isosceles triangle has congruent sides of 30 cm. The base is 10 cm. What is the height of the triangle?
  • John has 48 square centimeter tiles he wants to use to create a mosaic. He wants the mosaic to be rectangular with a length that is 2 centimeters longer than the width?
  • Can the sides of triangle have lengths 20, 10, and 21?
  • Leia cuts congruent triangular patches with an area of 45 square centimeters from a rectangular piece of fabric that 18 centimeters long and 10 centimeters wide. How many of the patches can Leia cut from 32 pieces of the fabric?