Answer:
A) It is right
Step-by-step explanation:
∠A=∠C, because a 180° line (straight line) meats at a certain point reaching the edge, which then means that the angles of 'A' and 'C' have to be the same.
So ∠A= 45°, and ∠C= 45°.
45+45= 90
A triangle's angles add to 180°.
180-90=90
∴∠B=90°, making it a right-angled triangle.
