Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. What is a quadrilateral? A quadrilateral is a four-sided shape where each of the sides are straight and ...

CBSE: Extra questions on Chapter 9 - Areas of Parallelograms and Triangles (for CBSE Class 9 Maths exam 2020-21) are available here. These NCERT based extra questions are important for the preparation ...

While I appreciated the nerdy geometry humor of Dave Blazek’s Oct. 15 “Loose Parts” comic, I cringed at the misnaming of his substitute for a triangle. The quadrilateral he drew is a parallelogram, ...

The area of a kite is found in the same way as a rhombus, that is by splitting it into two triangles.