Advanced Mathematics Primary 6 Geometry

In a rhombus PQRS, the diagonal PR is drawn. Triangle PQR is isosceles with QP = QR (since all sides of a rhombus are equal). Given that ∠QPR = 35°, find ∠PSR (the opposite angle of the rhombus from ∠PQR).

A 110°
B 55°
C 145°
D 70°
Show Worked Solution

Worked Solution

Step 1: In triangle PQR (isosceles, QP = QR), ∠QRP = ∠QPR = 35°. Step 2: ∠PQR = 180° − 35° − 35° = 110°. Step 3: Opposite angles of a rhombus are EQUAL: ∠PSR = ∠PQR = 110°. Answer: 110°

Correct answer: 110°

Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.

Start Free Trial — 7 Days Free