Daily Practice Problems
Class 9 Maths
Triangles
Class 9 Maths
Triangles
Question 1:
CPCT stands for _____.
Question 2:
In the given figure, OA = OB and OD = OC. Show that
(i) Δ AOD ≅ Δ BOC
(ii) AD || BC
Question 3:
Find the measure of each exterior angle of an equilateral triangle.
Question 4:
If ∆SKY ≅ ∆MON by SSS congruence rule, then write three equalities of corresponding angles.
Question 5:
Is ∆ABC possible, if AB = 6 cm, BC = 4 cm and AC = 1.5 cm?
Question 6:
In ∆PQR, PQ = QR and ∠R = 50°, then find the measure of ∠Q.
Question 7:
If in ∆ABC, ∠A = ∠B + ∠C, then write the shape of the given triangle.
Question 8:
In ∆ABC, if AB = AC and ∠B = 70°, find ∠A.
Question 9:
AB is a line segment and line l is its perpendicular bisector. If a point P lies on l, show that P is equidistant from A and B.
Question 10:
Line-segment AB is parallel to another line-segment CD. O is the mid-point of AD. Show that:
(i) ΔAOB ≅ ΔDOC (ii) O is also the mid-point of BC.
Question 11:
E and F are respectively the mid-points of equal sides AB and AC of Δ ABC (see Fig. 7.28). Show that BF = CE
Question 12:
If two triangles ABC and PQR are congruent under the correspondence A ↔ P,
B ↔ Q and C ↔ R, then symbolically, it is expressed as ______.
Question 13:
In a triangle, side opposite to the larger (greater) angle is ____. Also, the sum of any two sides of a triangle is ____ than the third side.
Question 14:
If two sides and the included angle of one triangle are equal to two sides and the included angle of the other triangle, then the two triangles are congruent. It is known as _____.
Question 15:
If in two right triangles, hypotenuse and one side of a triangle are equal to the hypotenuse and one side of other triangle, then the two triangles are congruent. It is known as ______.
Question 16:
Two figures are congruent, if they are of the ____ shape and of the ____ size.
Question 17:
In the given figure, AD = BC and BD = AC, prove that ∠DAB = ∠CBA.
Question 18:
Show that the angles of an equilateral triangle are 600 each.
Question 19:
In the given figure, ∠B < ∠A and ∠C < ∠D. Show that AD < BC.
Question 20:
ABC is an isosceles triangle in which altitudes BE and CF are drawn to equal sides AC and AB respectively. Show that these altitudes are equal.
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Problem-solving on Class 9 Maths Triangles NCERT Chapter 7 after learning a theoretical concept is crucial for several reasons:
- Application of Knowledge: Problem-solving allows you to apply the theoretical concepts of the topic Class 9 Maths Triangles you have learned to real-life situations. It helps you bridge the gap between abstract knowledge and practical scenarios, making the learning more relevant and meaningful.
- Understanding Deeper Concepts: When you encounter problems related to a theoretical concept that you learned in Class 9 Maths Triangles NCERT Chapter 7, you are forced to delve deeper into its intricacies. This deeper understanding enhances your comprehension of the subject and strengthens your grasp of the underlying principles.
- Critical Thinking: Problem-solving encourages critical thinking and analytical skills. It requires you to analyze the problem, identify relevant information, and devise a logical solution. This process sharpens your mind and improves your ability to approach complex challenges effectively.
- Retention and Recall: Actively engaging in problem-solving reinforces your memory and improves long-term retention. Applying the concepts learned in Triangles Class 9 Maths in practical scenarios helps you remember them better than passive reading or memorization.
- Identifying Knowledge Gaps: When you attempt to solve problems, you may encounter areas where your understanding is lacking. These knowledge gaps become evident during problem-solving, and you can then focus on filling those gaps through further study and practice. You can refer Triangles Class 9 Maths Notes on LearnoHub.com
- Boosting Confidence: Successfully solving problems after learning a theoretical concept boosts your confidence in your abilities to handle Triangles. This confidence motivates you to tackle more challenging tasks and improves your overall performance in the subject.
- Preparation for Exams and Challenges: Many exams, especially in science, mathematics, and engineering, involve problem-solving tasks. Regular practice in problem-solving prepares you to face these exams with confidence and perform well. It is also advised to take tests on Triangles Class 9 Maths Online Tests at LearnoHub.com.
- Enhancing Creativity: Problem-solving often requires thinking outside the box and exploring various approaches. This fosters creativity and innovation, enabling you to come up with novel solutions to different problems.
- Life Skills Development: Problem-solving is a valuable life skill that extends beyond academics. It equips you with the ability to tackle various challenges you may encounter in personal and professional life.
- Improving Decision Making: Problem-solving involves making decisions based on available information and logical reasoning. Practicing problem-solving enhances your decision-making skills, making you more effective in making informed choices.
In summary, problem-solving after learning a theoretical concept on CBSE Triangles Class 9 Maths is an essential part of the learning process. It enhances your understanding, critical thinking abilities, and retention of knowledge. Moreover, it equips you with valuable skills that are applicable in academic, personal, and professional contexts.
You must have heard of the phrase “Practice makes a man perfect”. Well, not just a man, practice indeed enhances perfection of every individual.
Practicing questions plays a pivotal role in achieving excellence in exams. Just as the adage goes, "Practice makes perfect," dedicating time to solve a diverse range of exam-related questions yields manifold benefits. Firstly, practicing questions allows students to familiarize themselves with the exam format and types of problems they might encounter. This familiarity instills confidence, reducing anxiety and improving performance on the actual exam day. Secondly, continuous practice sharpens problem-solving skills and enhances critical thinking, enabling students to approach complex problems with clarity and efficiency. Thirdly, it aids in identifying weak areas, allowing students to focus their efforts on improving specific topics. Moreover, practice aids in memory retention, as active engagement with the material reinforces learning. Regular practice also hones time management skills, ensuring that students can allocate appropriate time to each question during the exam. Overall, practicing questions not only boosts exam performance but also instills a deeper understanding of the subject matter, fostering a holistic and effective learning experience.
All About Daily Practice Problems on Class 9 Maths Triangles NCERT Chapter 7
Our Daily Practice Problems (DPPs) offer a diverse range of question types, including Multiple Choice Questions (MCQs) as well as short and long answer types. These questions are categorized into Easy, Moderate, and Difficult levels, allowing students to gradually progress and challenge themselves accordingly. Additionally, comprehensive solutions are provided for each question, available for download in PDF format - Download pdf solutions as well as Download pdf Questions. This approach fosters a holistic learning experience, catering to different learning styles, promoting self-assessment, and improving problem-solving skills. With our well-structured DPPs, students can excel in exams while gaining a deeper understanding of the subject matter. Hope you found the content on Class 9 Maths Triangles NCERT Chapter 7 useful.
Last but not least, to get the best hold on Class 9 Maths Triangles NCERT Chapter 7, do not forget to check out:
- Triangles Class 9 Maths Best videos
- Triangles Class 9 Maths NCERT Solutions
- Class 9 Maths Triangles Revision notes
- Triangles Class 9 Maths DPPs, Download PDF of solutions
- Class 9 Maths Triangles Online Tests
- Class 9 Maths Sample papers