Current location - Training Enrollment Network - Mathematics courses - The sixth grade People's Education Edition Volume II Mathematical Thinking 9 1 page explains as long as the example! ! ! ! ! Detailed! ! ! Formula reasoning quickly! ! ! ! !
The sixth grade People's Education Edition Volume II Mathematical Thinking 9 1 page explains as long as the example! ! ! ! ! Detailed! ! ! Formula reasoning quickly! ! ! ! !
Page 9 1: Add from 1 to a number less than the given number, and the product is the number of connected line segments. . .
That's what our teacher said.
Page 94: The sum of the inner angles of the polygon = 180 * (n-2) This is a summarized formula, where n is the number of sides of the polygon, and I hope to adopt it.