NCERT Figure it Out 3 - Q1 - Quadrilaterals

Question: Find all the sides and the angles of the quadrilateral obtained by joining two equilateral triangles with sides 4 cm.

Answer: All sides 4 cm; angles 60 deg, 120 deg, 60 deg, 120 deg (a rhombus).

Full step-by-step NCERT solution with diagrams on Something by Zero.