Euclidean geometry Grade 12 Notes, Questions and Answers Euclidean geometry, named after the ancient Greek mathematician Euclid, forms the foundation of geometric reasoning and proof. Studied extensively in grade 12 mathematics, Euclidean geometry encompasses a variety of concepts, theorems, and principles that have fascinated mathematicians and students alike for centuries. In this blog post, we will delve into the intricacies of Euclidean geometry, offering comprehensive notes, challenging questions, and detailed answers to enhance your understanding.
Euclidean Geometry Grade 12 Questions and Answers (Downloadable pdf)
Below you will find a list of Euclidean Geometry Grade 12 Questions and Answers from previous years’ activities, tests, and notes:
Watch: Grade 12 Geometry Lesson 1| Euclidean Geometry: Introduction (Triangles and parallel lines)
Types of triangles
| Name | Diagram | Properties |
| Scalene |  Two Congruent Triangles. Vector illustration. |
All sides and angles are different. |
| Isosceles |  |
Two sides are equal in length. The angles opposite the equal sides are also equal. |
| Equilateral |  |
All three sides are equal in length and all three angles are equal. |
| Acute-angled |  |
Each of the three interior angles is less than 9090°. |
| Obtuse-angled |  |
One interior angle is greater than 9090°. |
| Right-angled |  |
One interior angle is 9090°. |
Congruent triangles (EMCJ2)
| Condition | Diagram |
| SSS(side, side, side) |  △ABC≡△EDF△ABC≡△EDF |
| SAS(side, incl. angle, side) |  △GHI≡△JKL△GHI≡△JKL |
| AAS(angle, angle, side) |  △MNO≡△PQR△MNO≡△PQR |
| RHS(9090°, hypotenuse, side) |  △STU≡△VWX△STU≡△VWX |
Source:https://intl.siyavula.com/read/maths/grade-12/euclidean-geometry/08-euclidean-geometry-01