MCQ: Triangle - Class 10

ABC is a right triangle right angled at B such that BC = 6 cm and AB = 8 cm. The radius of its incircle is
• a)
3 cm
• b)
8 cm
• c)
2 cm
• d)
5 cm

Let ABC be the right angled triangle such that ∠B = 90° , BC = 6 cm, AB = 8 cm. Let O be the centre and r be the radius of the in circle.

AB, BC and CA are tangents to the circle at P, N and M.

∴ OP = ON = OM = r (radius of the circle)

By Pythagoras theorem,

CA2 = AB2 + BC2

⇒ CA2 = 82 + 62

⇒ CA2 = 100

⇒ CA = 10 cm

Area of ∆ABC = Area ∆OAB + Area ∆OBC + Area ∆OCA

The document MCQ: Triangle - Class 10 is a part of Class 10 category.
All you need of Class 10 at this link: Class 10

## FAQs on MCQ: Triangle - Class 10

 1. What is a triangle?
Ans. A triangle is a polygon with three sides and three angles.
 2. How can we classify triangles based on their sides?
Ans. Triangles can be classified into three types based on their sides: equilateral, isosceles, and scalene. An equilateral triangle has all three sides of equal length, an isosceles triangle has two sides of equal length, and a scalene triangle has no sides of equal length.
 3. How can we classify triangles based on their angles?
Ans. Triangles can be classified into three types based on their angles: acute, obtuse, and right. An acute triangle has all three angles less than 90 degrees, an obtuse triangle has one angle greater than 90 degrees, and a right triangle has one angle equal to 90 degrees.
 4. What is the sum of the angles in a triangle?
Ans. The sum of the angles in a triangle is always 180 degrees. This is known as the Triangle Sum Theorem.
 5. How do we find the area of a triangle?
Ans. The area of a triangle can be found by using the formula: Area = (base * height) / 2. The base is the length of one side of the triangle, and the height is the perpendicular distance from the base to the opposite vertex.
 Explore Courses for Class 10 exam

### Top Courses for Class 10

Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Track your progress, build streaks, highlight & save important lessons and more!
Related Searches

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

;