1. A closed figure formed by joining three non-collinear points is called
b)triangle d)none of these a)quadrilateral c)polygon
2. A triangle in which all the three sides and angles are equal is called
b)Scalene c)Equilateral d)None of these a)Isosceles
3. The longest side of a right triangle is a)median b)altitude c)hypotenuse d)base
4. In which of the following cases, the angles are not possible for a triangle. b)780, 410, 61° c) 390, 480, 850 d) 30°, 40º, 110° a)900, 420, 480
Assertion and Reasoning Question: In the following question a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as: (a) Both Assertion (A) and Reason (R) are correct and Reason (R) is the correct explanation of Assertion (A). (b) Both Assertion (A) and Reason (R) are correct but Reason (R) is not the correct explanation of Assertion (A). (c) Assertion (A) is true but Reason (R) is false. (d) Assertion (A) is false and Reason (R) is true. 5. Assertion(A): Two sides of a triangle are of lengths 5cm and 1.5cm. The length of the third side of the triangle cannot be 3.4. Reason (R): The difference between the two sides of a triangle should be less than the third side. Answer the following: 6. In the given figure, find the value of 'x'. 37 12 F061 Bex01 dtd 10th March 2020 37 7. In the figure, ABC is an equilateral triangle and ABD is an isosceles triangle with DA = DB. Find 'x'. 88 B 8. A tree is broken at a height of 5m from the ground and its top touches the ground at a distance of 12m from the base of the tree. Find the original height of the tree. 9. The angles of a triangle are in the ratio 3: 4: 5, Find the smallest angle. 10. I have three sides. One of my angle measures 15º. Another has a measure of 60°. What kind of a polygon am I? If I am a triangle, then what kind of triangle am I? XXXX XXXXXXXXXXXXXXXX XXXXXXX
