### We found 1,419 reviewed resources for diagonal

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Other Resource Types ( 1,419 )

Lesson Planet

#### Diagonals to Quadrilaterals

Begin from the inside and work outward. Pupils construct quadrilaterals based upon the descriptions of the diagonals. Pairs then work through several configurations of diagonals and determine the types of quadrilaterals they can form....

Lesson Planet

#### Diagonally Half of Me!

Cut straight to the proof. Given cutouts of different quadrilaterals, pupils draw diagonals. Learners cut up the figures along the diagonals to see whether they bisect each other. Scholars develop a geometric proof for the property they...

Lesson Planet

#### Prove Rhombus Diagonals Bisect Angles

What do congruent triangles have to do with diagonals of a rhombus? Given a rhombus, pupils develop a proof showing that a diagonal bisects opposite angles. The learners use what they know about congruent triangles to create the...

Lesson Planet

#### Proving Parallelogram Diagonals Bisect

Diagonals of parallelograms are so nice they share their lengths equally. Individuals investigate relationships that exist in the diagonals of parallelograms. They write a proof to show that the diagonals bisect each other.

Lesson Planet

#### Proving Congruent Diagonals

There's something special about the diagonals of rectangles. Young mathematicians prove a theorem about a given rectangle. Specifically, they must show that the diagonals are congruent.

Lesson Planet

#### Rhombus Diagonals

Delving into a proof that the diagonals of a rhombus are perpendicular to each other, this lecture evaluates the angles and sides of this figure. It would serve as a great test preparation activity.

Lesson Planet

#### Diagonals

In this diagonals activity, 10th graders identify and complete 11 different problems that include determining the diagonals of various figures shown. First, they draw the diagonals in the polygons shown and complete the table. Then,...

Lesson Planet

#### Diagonals of Quadrilaterals

Teach your mathematicians how to identify different polygons based on their diagonals. Relating quadrilaterals to the different number of diagonals formed, students use the TI to create a visual of their shape.

Lesson Planet

#### Interior Angles, Exterior Angles, and Diagonals of Polygons

How does the number of sides of a polygon affect the angle measures? Learners recognize a pattern in finding the total measure of interior and exterior angles and the number of diagonals. They use the patterns to calculate the number of...

Lesson Planet

#### Diagonals of a Rectangle

Coordinate the vertices of a rectangle. Pupils use the location of three vertices of a rectangle along the axis to find the coordinates of the fourth vertex. Using the vertices of the rectangle, scholars prove the diagonals are congruent...

Lesson Planet

#### Similarity: Instructional

In this similarity worksheet, learners solve and complete 7 different problems that include determining various dimensions of mirrors shown. First, they find the length of the diagonal of the large mirror in the diagram. Then, students...

Lesson Planet

#### Quadrilaterals - Diagonals

Young geometers take a look at a variety of shapes and name each one. All of the shapes are quadrilaterals, and they all have intersecting diagonal lines running through them. This presentation would be good to use as an introduction to...

Lesson Planet

#### Area of Diagonal Generated Triangles of Rectangle are Equal

Finding the area of each of the triangles that are created by drawing two diagonal lines through a rectangle is explored in this lecture. It provides a detailed explanation of how to use a formula to solve the given problem. Tip: Use...

Lesson Planet

#### Area of Diagonal Generated Triangles of Rectangle are Equal

Lesson Planet

#### Going out of Business: Pythagorean Theorem

Students find the length of diagonals. In this Pythagorean theorem lesson, students use the Pythagorean theorem to determine the length of diagonals.

Lesson Planet

#### Crazy 8s (Tennis)

Practice those forehand and backhand tennis strokes. Here's an activity to practice hitting the ball diagonally across the court and also hitting the ball down the alley line. This figure eight drill can be challenging for young learners...

Lesson Planet

#### Midpoint of a Line Segment

In this line segment activity, 10th graders identify and solve 10 different problems that include determining the midpoint of a line segment in each. First, they determine the midpoint of a segment that connects two points. Then,...

Lesson Planet

#### Investigating Properties of the Diagonals of Quadrilaterals

Tenth graders investigate quadrilaterals. In this geometry lesson, 10th graders investigate the properties of the diagonals of quadrilaterals. The dynamic nature of Cabri provides opportunity for conjecture and verification. The...

Lesson Planet

#### Diagonal #4

In this diagonal lines activity, students practice drawing diagonal lines in the middle of parallel diagonal lines. Students draw three diagonal lines.

Lesson Planet

#### Pythagorean Theorem Word Problems

In this Pythagorean theorem worksheet, 10th graders solve 10 different word problems that include using the Pythagorean theorem in each. First, they determine the height of an equilateral triangle. Then, students determine the length of...

Lesson Planet

#### Digging into Diagonals

In this math learning exercise, students discover the relationships between geometric figures and their diagonals. Students use cardboard triangles to form other geometric shapes and draw the diagonals on other geometric figures, keeping...

Lesson Planet

#### Quiz: Determinants - 3 x 3 Matrix (Diagonals Method)

In this determinants learning exercise, students are given a matrix and expand it along the diagonal. This one-page learning exercise contains ten problems.

Lesson Planet

#### Why is This a Magic Square?

In this magic square instructional activity, 7th graders identify and solve 12 different problems that include determining various magic squares. First, they determine the sum of numbers in each row, column, and diagonal. Then, students...

Lesson Planet

#### Elements Picture Assignment

Students identify the basic structural and decorative designs, create examples of line (horizontal/vertical/curved/diagonal), as well as identify and explain the difference between shape and form. Then, they identify and explain the use...