Senin, 10 Agustus 2026

🔒 PHASE 3 — LOCK 2

Level: Algebra — Supplementary & Complementary Angles

Time: 15 minutes

Student Instructions

Envelope 2: The Algebra Lock

Congratulations! You have opened Lock 1.

Now you must solve equations involving supplementary and complementary angles.

Remember:

Supplementary angles:
$x + y = 18 0^{\circ}$
Complementary angles:
$x + y = 9 0^{\circ}$
Find x and y in each puzzle.

Finally, calculate:
$x + y + z$
to obtain the 3-digit Lock 2 code.

Puzzle 1 — Supplementary Angles

Two angles form a straight line.

(3 x + 15)^{\circ}

and

(2 x + 25)^{\circ}

Find x.

x= ______

Puzzle 2 — Complementary Angles

Two angles form a right angle.

(4 y + 5)^{\circ}

and

(2 y + 13)^{\circ}

Find y.

y= ______

Puzzle 3 — The Final Variable

Two supplementary angles are:

(5 z - 10)^{\circ}

and

(2 z + 15)^{\circ}

Find z.

z= ______

🔐 LOCK 2

Calculate:

x+y+z

Your 3-digit code is:

🔒 _ _ _

🔐 ESCAPE ROOM: ANGLE MASTERY

General Instructions

Your mission: Solve the three challenges and unlock all three locks.
Each lock has a 3-digit code.
Work carefully, show your calculations, and do not guess the code!

🔒 PHASE 2 — LOCK 1

Level: Angle Types & Basic Measurement

Time: 15 minutes

Student Instructions

Envelope 1: The First Lock

Inside this envelope, you will find several angle puzzles.

Step 1: Identify the type of each angle: acute, right, obtuse, straight, or reflex.
Step 2: Determine the missing angle or calculate the required measurement.
Step 3: Add the three final answers together to obtain the 3-digit Lock 1 code.