Section 05
Activities, drills and learning games
Four interactive trainers plus hands-on classroom activities. Each game targets one skill from the lesson: naming pairs, computing angles, ordering a proof, and reading a live figure.
Game 1 · Angle Hunter
Name the pair ∠1 and ∠5.
Question 1 · Score 0
Game 2 · Find-x Challenge (timed)
Time left: 60s
Solved: 0
Press start — questions are generated randomly.
Game 3 · Proof Builder
Given: m(∠ABC) = 58°, m(∠ECD) = 29°, CE bisects ∠BCD. Required: prove BA ∥ CD.
Available statements
Your proof
- Click statements in the correct order.
Lab · Parallel Lines Explorer
The two lines stay parallel, so every other angle is forced. Watch which measures stay equal to ∠2 and which become its supplement.
∠1
115°
∠2
65°
∠3
65°
∠4
115°
∠5
115°
∠6
65°
∠7
65°
∠8
115°
Check: ∠3 + ∠5 = 180° and ∠4 + ∠6 = 180° — co-interior angles are always supplementary.
Off-screen activities
Classroom hunt
Photograph five real transversals around school — window frames, floor tiles, railings — and label one pair of each angle type on the printout.
Paper folding
Fold a sheet twice to create two parallel creases, then fold a slanted crease across them. Measure the eight angles with a protractor and verify every rule.
Proof relay
In teams of four, each student writes one line of a proof and passes it on. The team with the fewest unjustified statements wins.