kwizNET Subscribers, please login to turn off the Ads!
Email us to get an instant 20% discount on highly effective K-12 Math & English kwizNET Programs!

Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Geometry
2.4 Classifying Triangles by Angles

Classification of triangles based on angles

  1. Acute angled triangle:

    • If all the angles of a triangle are acute angles, then it is called an acute angled triangle.

  2. Right angled triangle:
    • A triangle in which one of the angles is a right angle is called a right angled triangle.

    • In a right angled triangle, the side opposite to the right angle is called its hypotenuse.

  3. Obtuse angled triangle:
    • A triangle containing an obtuse angle is called an obtuse angled triangle.



Directions: Read the above properties of triangles and answer the following questions:
  1. Illustrate each of the above properties by drawing a triangle.
  2. Write in your own words, how to classify triangles according to their angles.

Q 1: A triangle whose angles are given by 75 degrees, 45 degrees and 60 degrees is a (an) ________ angled triangle.
Answer:

Q 2: In a triangle the angles are given by 55 degrees, 25 degrees and 100 degrees. The triangle is a (an) ________.
Acute angled scalene triangle
Right angled scalene triangle
Obtuse angled scalene triangle

Q 3: The angles 70 degrees, 80 degrees and 30 degrees represents the angles of an acute angled triangle.
True
False

Q 4: If the angles of a triangle are given by 100 degrees, 30 degrees and 50 degrees, then the triangle is an right angled triangle.
True
False

Q 5: The angles 30 degrees, 60 degrees and 90 degrees represents a (an) ________ angled triangle.
Answer:

Q 6: The angles 90 degrees, 30 degrees and 60 degrees represents an obtuse angled triangle.
False
True

Q 7: The angles 90 degrees, 45 degrees and 45 degrees represents a (an) ________ triangle.
Right angled isosceles
Acute angled isosceles
Obtuse angled scalene

Q 8: A (an) ________ angled triangle has its angle measures as 100 degrees, 60 degrees and 20 degrees.
Answer:

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


Subscription to kwizNET Learning System offers the following benefits:

  • Unrestricted access to grade appropriate lessons, quizzes, & printable worksheets
  • Instant scoring of online quizzes
  • Progress tracking and award certificates to keep your student motivated
  • Unlimited practice with auto-generated 'WIZ MATH' quizzes
  • Child-friendly website with no advertisements
  • Choice of Math, English, Science, & Social Studies Curriculums
  • Excellent value for K-12 and ACT, SAT, & TOEFL Test Preparation
  • Get discount offers by sending an email to discounts@kwiznet.com

Quiz Timer