Write down the size of angle ABC. Give a reason for your answer. I know the angle is 90 degrees however I cant find the reason to give me the second mark. Can someone please help?
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With a bit of mathematical ability, this formula (a^2 + b^2 = c^2) can be manipulated and used to determine a right angle. Using a ruler, measure the sides of the angle as well as the distance between the angle's open endpoints. If these values plug into the formula correctly, then the angle is a 90-degree angle.
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Answer:
Step-by-step explanation:
by Pythagoras theorem
it is only applicable for right angle triangle
in right angle triangle one angle must be 90°
hope you understand
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