Geometry TEST

Multiply Stuff

100

5 times 2/3 =

10/3 (ten thirds) or 3 1/3 (three and one third)

200

1/5 times 4/5 = 

4/25 (four twenty-fifths)

300

1/4 times 8=

8/4 (eight fourths) or 2 (two: 8 divided by 4 is 2)

400

1/2 times 3/4=

3/8 (three eighths)

500

13 times 1/2=

13/2 (thirteen halves) or 6 1/2 (six and a half)

Classify Triangles

100

One right angle

All sides different lengths

Right Scalene

200

One obtuse angle

Two sides same length

Obtuse Isosceles

300

All 60⁰ angles

All sides same length

Equilateral

400

One right angle

Two sides same length

Right Isosceles

500

2 right angles

All sides same length

Does NOT exist!! Hahahahahahah

Polygons

100

Any closed, straight sided 2D shape with congruent sides AND angle measurements.

Regular Polygon

200

Polygon with 4 vertices and 4 sides.

Quadrilateral (could be a square, rectangle, parallelogram, rhombus, kite, trapezoid)

300

A polygon in the shape of a STAR would be named as _____?

Decagon (10 sides)

400

A six-sided irregular polygon would be named as _____?

Hexagon

500

The polygon with the LEAST number of sides and angles goes by what name?

Triangle

Area Formulas

100

What shape uses THIS FORMULA: A = l x w

Any rectangle or square

200

What shape uses THIS FORMULA: A = b x h

Parallelograms (including rectangles & squares)

300

A = 1/2 b x h is ONE way you might see THIS shape's area formula.

Triangle

400

THIS shape's area formula includes TWO bases that must be added together FIRST.

Trapezoid

500

ALL area formulas include a base(s) and height that meet at this particular type of lines or angle...

Perpendicular lines (meet at 90^o)

Find the Area

100

Find the area of this Parallelogram: base of 7 inches and height of 5 inches

base x height

7 x 5 = 35 inches²

200

Find the area of this Right Triangle: base of 12 cm height of 10.5 cm

1/2 times (12 x 10.5) or (12 x 10.5)/2

126/2=63 cm²

300

Find the area of a trapezoid that has two parallel sides of 4 inches and 11 inches and a height of 5 inches

A = 5 x (4 + 11)/2 or (4+11) x5 /2 

A=110 inches²

400

What shape and area would this be?

(7x3)/2

Triangle with Area of 10.5 (10 1/2) units²

500

What area formula(s) could you use to find the area of a regular hexagon?

Two congruent trapezoids, 6 congruent equilateral triangles, 3 congruent parallelograms, or a mixture of those.