Given: â–³ABC with a2 + b2 = c2 and right â–³DEF constructed with legs a and b and hypotenuse n
Prove: â–³ABC is a right triangle.
Complete the missing parts of the paragraph proof.
Proof:
We are given a2 + b2 = c2 for â–³ABC and right
â–³DEF constructed with legs a and b and hypotenuse n. Since â–³DEF is a right triangle, we know that a2 + b2 = n2 because of the . By substitution, c2 = n2 Using the square root property and the principle root, we can take the square root of both sides to get
c = n. By , triangles ABC and DEF are congruent. Since it is given that
∠F is a right angle, then ∠is also a right angle by CPCTC. Therefore, △ABC is a right triangle by
