Shape: 4 Equal Sides, 2 Obtuse and 2 Acute Angles
Puzzle 3 of Vienna Hard Pack
Question is: Shape: 4 Equal Sides, 2 Obtuse and 2 Acute Angles
and the answer is: RHOMBUS
Word Meaning:
RHOMBUS — (geometry) A parallelogram having all sides of equal length.
Definitions from Wiktionary.