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When we will measure angles of triangle using protractor then we find that all angles are equal to 60
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When we will measure angles of triangle using protractor then we find that all angles are equal to 60
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(i) The sum of the angles of a triangle is 180°.
(ii) The sum of any two sides of a triangle is always greater than the third side.
(iii) In âABC, if ∠A = 90°, then:
BC2 = (AB2) + (BC2)
(iv) In âABC:
AB = AC
AD ⊥ BC
Then, BD = DC
(v) In the given figure, side BC of âABC is produced to D and CE || BA.
If ∠BAC = 50°, then ∠ACE = 50°.
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Question 18:
(i) The sum of the angles of a triangle is 180°.
(ii) The sum of any two sides of a triangle is always greater than the third side.
(iii) In âABC, if ∠A = 90°, then:
BC2 = (AB2) + (BC2)
(iv) In âABC:
AB = AC
AD ⊥ BC
Then, BD = DC
(v) In the given figure, side BC of âABC is produced to D and CE || BA.
If ∠BAC = 50°, then ∠ACE = 50°.
Answer:
View NCERT Solutions for all chapters of Class 7