The three angles in a triangle add up to \(180^\circ\). If two of the angles are known then the third can be calculated by following these steps: Add the two known angles together. Subtract the total ...

STEP 1: Use the ruler to draw a straight horizontal line, draw a diagonal line from the end of the horizontal line... Image caption, ...and draw another diagonal line to join the points and mark the ...

A viral puzzle circulating on social media challenges people to count the number of triangles in an image. The image contains a pattern of diagonal lines that form multiple triangles. Though it may ...