Junior Cycle · Geometry
⏱ Tested in 2 exam questions since 2022
Lesson 3 of 12
JCHL Geometry 3: Types of Angles
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- When you see parallel lines (little arrows), think ALTERNATE (Z) and CORRESPONDING (F) angles
- Vertically opposite angles (an X-cross) are equal
- Best tactic: do not chase the answer — fill in EVERY angle you can
- Two extra tools: angles on a straight line add to 180°, and the three angles of a triangle add to 180°
Most recent exam questions
- 2025 Q6(b)(i)
- 2022 Q8(a)
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