opposite angles

To solve a right angled triangle, we need to find out the unknown sides and the angles with the help of t-ratios. To find a side, usually we take such t-ratios that involve the unknown sides. In the figure, AB = 100 cm, find (i) x and (ii) ..

Statement - If two lines intersect, then the vertically opposite angles are congruen..

Question 1 - Question: Can two vertically opposite angles be supplement to each other? Draw a diagram to illustrate your answer. Answer: Let AB and CD bisect each other at right angles as shown in figur..

From the top of a tower of height h meters the angle of depression of a red car is φ ° and the angle of depression of a blue car which is on the opposite side of the tower is θ °. If the distance between the foot of the tower and the red car is y mete..

Draw LO and MO at L and M respectively. Extend KL and MN to meet at P. i.e. d = i 1 r 1 + i 2 r 2 d = i 1 + i 2 (r 1 + r 2 ) (exterior angle is sum of interior opposite angles..

Vertically opposite angles are always equ..

Prove that in any triangle, the sides of a triangle are proportional to the sines of the opposite angles..

Which of the following conditions makes a quadrilateral parallelogram? => one pair of opposite sides are congruent and parallel or diagonals intersect at right angles or one pair of opposite angles are congruent or one pair of opposite sides are par..

If a side of a triangle is produced, the exterior angle so formed is equal to the sum of the interior opposite angles..

If two lines intersect, then the vertically opposite angles are congruen..