Two acute angles form a linear pair. If one of the angles of a triangle is obtuse, the other two angles of a triangle must be acute. Always. As supplementary angle means 180 the sum total of 89 and 91 is 180. An obtuse angle is a type of angle whose degree measurement is more than 90° but less than 180°. Question 61. • A right angle is equal to 90°. Obtuse Angle. Other resources: Angles - Problems with Solutions Types of angles Parallel lines cut by a transversal Test. Both of the angles are right angles. Sum of interior angles on the same side of a transversal with two parallel lines is 90°. (a) One obtuse angle and one acute angle (b) One reflex angle and one acute angle (c) Two obtuse angles (d) Two right angles Solution: (d) Because sum of two right angles is equal to 180°. Straight Angle 4. The angle opposite to the obtuse angle is the longest side of the triangle. no because supplementary means when 2 angles equal 180 degrees. Grade 7 Maths Lines and Angles … 5. • An obtuse angle … An equilateral triangle cannot be obtuse. As one acute angle and one obtuse angle can make two supplementary angles. Answer: Yes . Two right angles are always supplementary to each other. but an acute angle is always less than 90 degrees, so two acute angles cannot add up to equal 180 degrees/be supplementary. Take acute angle as 89 and obtuse angle as 91. Two angles are supplementary, if. An obtuse triangle is ___ isosceles. The bisectors of two supplementary angles are ___ perpendicular to each other. View Full Answer Its FREE, you're just one … ∠1 is an obtuse angle, and any one acute angle, paired with any obtuse angle are supplementary angles. One obtuse angle and one acute angle can make a pair of supplementary angles. Note: • An acute angle is less than 90°. Similarly, a triangle cannot have a right angle and obtuse angle at the same time. Obtuse Angle … This is the only angle marked that is acute. This means that ∠A + ∠B = 180°. One of its angles is an acute angle and another angle is an obtuse angle. Solution: True. asked Jun 2, 2020 in Lines and Angles by Subnam01 ( 52.0k points) lines and angles Solution: True Since, 90° + 90° = 180°, a supplementary angle. 2. If the sum of two angles is an obtuse angle, at least one of the angles must be ___ a. acute. Examples of obtuse angles are: 100°, 120°, 140°, 160°, 170° etc. If two adjacent angles are complementary they form a right angle. Two obtuse angles form a linear pair. One obtuse angle and one acute angle can make a pair of supplementary angles. ∠ PQR is an obtuse angle because its less than 180° and greater than 90°. 3. As each of the angle is $$<90^0$$.So, the sum of two acute angles is always less than $$ 180^0$$.Hence they cannot form pair of supplementary angles. Two angles are said to be supplementary angles when they add up to 180 degrees. The angle supplementary to ∠1 is ∠6. Question 62. 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