## All Tasks

#### Angles of triangles

In this isosceles triangle, the angles at the base are twice the angle b at the apex.
Choose a suitable equation that you can use to calculate the angle b.

# Unassigned

Training

7

#### Perimeter kite

In a kite-rectangle, one side is three times as long as the other x. Cross all terms that can be used to determine the perimeter of the figure.

# Unassigned

Modeling

7

#### Sequence of triangles 1

Determine the numbers of small trinagles for the given step.

# Quadratic functions

Modeling

7

#### Sequence of squares 1

Determine the numbers of small squares for the given step.

# Unassigned

Modeling

8

#### perimeter trapzoid

In a symmetrical trapezoid, the two parallel sides a and c together are twice as long as the sum of the other two sides. Cross a term that can be used to determine the perimeter of the figure.

# Unassigned

Modeling

7

#### Example challenge task

There are some important conceptual differences between support and challenge tasks. Maybe you can guess what these are?
Below, take a chance at selecting all the correct answers.

# Numbers & operations

Learning

7