Math with Mr. Jay: Right Triangles

What is a Right Triangle?

• A triangle with a right angle (exactly 90 degrees).
• The other angles can be any measurement.

Classifying Triangles

• Triangles can be classified by sides or angles.
• Right triangles are classified based on their angles.

Recognizing Right Triangles

• Look for a box in the corner, representing the 90-degree angle.
• The box indicates the angle is 90 degrees, even if not labeled.
• Common in various shapes, not just triangles.

Important Notes on Right Triangles

• A triangle can only have one right angle.
• Sum of all angles in a triangle equals 180 degrees.
  • Example 1: 45° + 45° + 90° = 180°
  • Example 2: 27° + 63° + 90° = 180°
• Two 90-degree angles would sum to 180°, leaving no room for a third angle.

Summary

• If a triangle has a right angle (90 degrees), it is a right triangle.

• Thanks for watching!
• Until next time, peace!