Opposite angles are always equal, so the remaining green and purple angles must be 80° and 100°. All angles around a point will always add up to 360°. Parallel lines are marked with arrows.

Netizens in Singapore began highlighting this issue some time ago, growing alarmed over lines suddenly appearing on their Samsung phones. The lines ran from the top to the bottom of their phone ...

Its fragrant, purple-blue flowers and silvery-green foliage provide a stunning ... along borders and fencelines can create a stunning vertical display, adding both beauty and biodiversity to ...