Question

solve it
the sides of two angle of a triangle ​
4 number question

Answer 1

Step-by-step explanation:

first one is right angle triangle

Answer 2

$simply \: if \: we \: want \: to \: know \: that \\ a \: triangle \: is \: right - angled \: or \: not \\ \: we \: have \: to \: check \: if \: its \: sides \: obey \: pythagoras \: theorem \\ pythagoras \: theorem \: states \: hypotenuse = \sqrt{(base)^{2} + (perpendicular) ^{2} } \\ \\ \\ for \: i) \: part \: \: \: \: \: 10 = \sqrt{(6)^{2} + (8) ^{2} } \\ 10 = \sqrt{100} \\ 10 = 10 \: \: (hence \: it \: is \: a \: right \: angled \: triangle \: ) \\ \\ for \: ii) \: part \: 11 = \sqrt{(8)^{2} + (5) ^{2} } \\ 11 = \sqrt{89} \\ but \: 11 = \sqrt{121} \: so \: it \: is \: not \: a \: right - angled \: triangle$