Answer :

darth666
one. beacuse - sum of triangle angles is [tex]180^{o} [/tex]
then 180-90-(0.5*90)=90-45=45

rectangular equilateral triangle

epicacole02

Answer:

one. beacuse - sum of triangle angles is  

then 180-90-(0.5*90)=90-45=45

rectangular equilateral triangle

Step-by-step explanation:

becuase im quick maths hope this help u

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