Get a full recap of congruent triangles in preparation for the Unit 4 Test.
Now that we have learned about congruent triangles and how to label congruent parts, we can use that information to prove that two given triangles are congruent. There are 5 ways to prove triangles congruent: SSS, SAS, ASA, AAS, and HL. Check inside the lesson to find out what each acronym means.
If you understand how congruent triangles work, then the next step is to practice labeling those congruent parts. Check out this lesson to find out how to take given information and represent it on a diagram.
Learn about congruent triangles in this lesson on how to write a congruence statement and use congruent statements to compare corresponding parts.
Get a quick review of all of the concepts from G.5 in this lesson:
- Ordering the angles and sides of a triangle
- Determining if three side lengths make a triangle
- Finding the range for the third side of a triangle when given two side lengths
In our second lesson on triangles, we introduce three more triangle facts:
- The biggest side is always opposite the biggest angle.
- The longest side of a triangle must be less than the other two sides added together.
- When given two side lengths, the range for the third side is between the difference and the sum of the two numbers.
Check out more inside!
Welcome to the 2nd Marking Period!!
Beginning this week, we will be starting a new unit on triangles. Click the link below to check out our introductory lesson and learn some basic facts about triangles.
Review the concepts of parallel lines with a transversal in this lesson, with some included matching practice with geometric constructions. We’ll discuss the four major angle relationships that prove lines parallel and play a fun game called “Congruent or Supplementary.”