Equations and Quadrilaterals

Internal Angle

100

A triangle has two 60° angles. What is the value of the 3rd angle

60°

200

A triangle has a 90° and a 30° angle. What is the value of the 3rd angle?

30°

300

A triangle has a 45° angle and a 50° angle. What is the value of the 3rd angle?

85°

400

A triangle has a 64° angle and a 44° angle. What is the value of the 3rd angle?

72°

500

A triangle has a 105° angle and a 32° angle. What is the value of the 3rd angle?

43°

Solve for x

100

2 + x = 5

x = 3

200

x + 6 = 13

x = 7

300

x² = 16

x = 4

400

x² - 6 = 10

x = 4

500

x² + 6 = 10

x = 2

Expand the Brackets

100

2(a + 3)

2a + 6

200

3(b - 9)

3b - 27

300

4a²(a + 2)

4a³ + 8a²

400

15b(b² - a)

15b³ - 15ba

500

23a²(a² - 2a)

23a⁴ - 46a³

What am I?

100

I have 4 equal sides and angles

Square

200

I have 4 right angles, 2 long sides and 2 short sides

Rectangle

300

I have 2 sets of parallel sides and 2 acute angles but I'm not a rhombus

Parallelogram

400

I can fly

Kite

500

I have 4 unequal sides and usually none of my angles are equal

Trapezium

Substitution

100

x - 2, when x = 5

3

200

2 + x, when x = 7

9

300

x² - 1, when x = 2

3

400

x³ + 5, when x = 5

130

500

x² + 5x - 7, when x = 3

17