SHORT TUTORIAL
- 1
Identify the vertex and the relationship before doing arithmetic.
- 2
Read exactly what is stated. Separate guaranteed facts from appearance.
- 3
A straight angle is 180°; a full turn is 360°; vertically opposite angles are equal.
COACH · ANTICIPATE EACH DECISION
In ∠ABC, which letter names the vertex?
Before revealing: which property or operation will you use?
Watch for this: Adjacent angles are not always equal, and opposite-looking angles may not be vertically opposite.
MIXED PRACTICE · 8 ITEMS
Practise. Explain. Check.
Show your working or construction on paper. State units where asked. For questions 7 and 8, explain your method. Numerical entries may be rounded to 2 decimal places. Later stages retrieve earlier methods. Answers and explanations stay separate.
See answers & explanations
- Q
The middle letter in a three-letter angle name names the vertex.
- M
The middle letter in a three-letter angle name names the vertex.
- Y
The middle letter in a three-letter angle name names the vertex.
- E
The middle letter in a three-letter angle name names the vertex.
- S
The middle letter in a three-letter angle name names the vertex.
- B
The middle letter in a three-letter angle name names the vertex.
- Q
The middle letter in a three-letter angle name names the vertex.
- M
The middle letter in a three-letter angle name names the vertex.
Self-assess only after at least 7 of 8 independently, including both reasoning items. At stages 4–6, explain a method choice. Before calling the whole skill secure, solve two unseen variants including another context. Repeat after several days. These are teaching targets.