Math 2 Lesson: Rectangle
1.1. Knowledge to remember
1.2. Math forms
Form 1: Draw a rectangle or a quadrilateral.
Based on the squares on the paper, connect the given points, satisfying the conditions to form the edges of the figure to be drawn.
Form 2: Count the number of quadrilaterals or rectangles in the figure.
– Count single shapes.
– Counting shapes made from single shapes
– Calculate the sum of the pictures found and answer.
Form 3: Add a straight line to get the required shape.
– Draw straight lines in the picture.
– Count the newly created shapes.
– Which drawing method has the number of shapes just created according to the requirements, choose that drawing method
1.3. Solving Textbook Exercises
Use a pen and ruler to connect the points to get:
Use a pencil and ruler to connect the points so that:
A rectangle has two equal long sides and two equal short sides.
A quadrilateral is a figure with four sides.
a) Connect four points A, B, C, D to get rectangle ABCD
b) Connect four points M, N, P, Q, we get quadrilateral MNPQ.
How many quadrilaterals are there in each figure below?
Count the shapes with four closed sides in each given shape.
Figure a) has a quadrilateral.
Figure b) has two quadrilaterals.
Figure c) has a quadrilateral.
Draw a line in the following figure to get:
a) A rectangle and a triangle
b) Three quadrilaterals
– Use pencil and ruler to draw more lines into each shape.
– Count the quadrilaterals, triangles or rectangles in the picture just drawn, if it matches the required number of questions, that’s the way to draw.