Question

Tap the bubbles which are quadrantal angles.

• A. ${45}^{\circ }$
• B. $0^{\circ }$
• C. $-{180}^{\circ }$
• D. ${1800}^{\circ }$
• E. ${90}^{\circ }$
• F. ${120}^{\circ }$
• G. ${180}^{\circ }$
• H. ${270}^{\circ }$
• I. ${900}^{\circ }$
• J. $-{90}^{\circ }$

Answer 1

Answer: (B), (C), (D), (E), (G), (H), (I), (J)

$-{90}^{\circ }$