a point where two lines meet; a corner

कोना

English Usage: The triangle's vertex was clearly marked.

Hindi Usage: त्रिभुज का कोना स्पष्ट रूप से चिह्नित था।

the highest point; the apex

deflection of light when passing through different mediums

change in direction of a wave when it enters a different medium

तरंग का Richtung परिवर्तन

English Usage: The scientist studied the refraction of sound waves in water.

Hindi Usage: वैज्ञानिक ने पानी में ध्वनि तरंगों के पारगम्यता का अध्ययन किया।