Identifying Right Triangles
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Objective
I can classify triangles as right triangles based on the measure of their angles and the relationship between their sides.
Part 1 of 4
Warm-up video
Math with Mr. J · 2:27Vetted channel
We don't generate video — this one is by Math with Mr. J on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
A right triangle is defined as a triangle that contains one angle that measures exactly 90 degrees.
- 2
Right triangles are classified based on their angles, and a box in the corner of a triangle typically represents a 90° angle.
- 3
A triangle can only have one right angle because the sum of all angles in a triangle must equal 180 degrees.
Part 3 of 4
Practice
11 questions
What is the defining characteristic of a right triangle?
A triangle has angles measuring 30 degrees and 60 degrees. What must the measure of the third angle be for it to be classified as a right triangle?
Part 4 of 4
Exit ticket
Quick comprehension check
“A triangle has angles measuring 30°, 60°, and 90°. Is this a right triangle? Explain your answer.”
Sample answer included in the free materials
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