Question

equal to 60°.
Q15 If length of side of an equilateral triangle is doubled, then degree measure of
vertical angle will be
Q16. If each side of equilateral triangle is doubled, then each of its angle will
Q17. The sum of two angles of a triangle is 80° and their difference is 20°. Find all
angles.
Q18. If the three angles of a triangle, one is twice the smallest one and another is
times the smallest one. Then, find the angles.
Q19. If the sum of two angles of a triangle is equal to its third angle, find the mea
the third angle.
220. If one of the angle of a triangle is 130°, then the angle
between the bisectors of the other two angles can be:-
a) 50° b) 65° c)145° d)155°​

Answer 1

✨ ANSWER:-✨

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Let, 1 angle be x

Other 2 angles are x and 2x

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F1st we have to solve the x.

Sum of the angles = 180°

Sum of the angles = 180°X +x + 2x = 180

4x = 180

$x = \frac{ \cancel{ 180}}{ \cancel{ 4}} = 45$

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Now, we have to find the angles.

$1st \: angle = x = 45 \degree \\ 2nd \: angle = x = 45 \degree \\ 3rd \: angle = 2x = 2(45) = 90 \degree$

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$\boxed {\tt {the \: 3 \: angles \: are \: 45 \degree,45 \degree \: and \: 90 \degree}}$

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