3. In a quadrilateral, three angles are in the ratioof 3:3 1 and the f

1.	3. In a quadrilateral, three angles are in the ratioof 3:3 1 and the fourth angle is 80° Find themeasures of equal angles.
Answer» How did you get that 120 Let the three angles measure be 3x°, 3x° and x° each. fourth angle is 80° Sum of all the angles of a quadrilateral is 360°. ∴ 3x+3x+x+80=3607x+80=3607x=360-807x=280x=280/7x=40 Angles of the quadrilaterals are3x°=3*40=120°,120° and 40°

3. In a quadrilateral, three angles are in the ratioof 3:3 1 and the fourth angle is 80° Find themeasures of equal angles.

Answer»

How did you get that 120

Let the three angles measure be 3x°, 3x° and x° each.

fourth angle is 80°

Sum of all the angles of a quadrilateral is 360°.

∴ 3x+3x+x+80=3607x+80=3607x=360-807x=280x=280/7x=40

Angles of the quadrilaterals are3x°=3*40=120°,120° and 40°