Answer:
12. Heptagon
13. 14 cm
14. 50°
Step-by-step explanation:
12.
A polygon containing
3 sides is a triangle
4 sides is Quadrilateral
5 Sides is a Pentagon
6 sides is a Hexagon
7 sides is a Heptagon
Our polygon contains seven sides, it is hence a Heptagon
13. RST = ?
S is the mid point of RT
Hence RS = ST
ST = 7 given
Hence RS = 7
RT = RST = RS + ST
= 7 + 7
= 14 cms
14.
∠RSQ = ∠QST = 25°
∠RST=∠RSQ + ∠QST = 25°+ 25° = 50°
