Understanding quadrilaterals

Which of the following statements is incorrect ?

• A rectangle has all angles and all sides equal to each other.

• A hexagon as 6 sides.

• A regular octagon has 8 sides of equal length.

• A rhombus and a rectangle are irregular polygons.

Tags

CCSS.5.G.B.3

CCSS.5.G.B.4

What is the sum of exterior angles of a quadrilateral?

• 180

• 90

• 360

• 540

The diagonals do not necessarily intersect at right angles in a ?

• paralellogram

• square

• rhombus

• kite

Tags

CCSS.HSG.CO.C.11

The measure of each interior angle of a rectangular polygon of 12 sides is ?

• 90

• 120

• 140

• 150

If a convex polygon has n sides, the no. of diagonals is given by ?

• $\frac{n\left(n+3\right)}{2}$ 

• $\frac{n\left(n-3\right)}{2}$

• $\frac{n+\left(n-3\right)}{2}$

• $\frac{n+\left(n+3\right)}{2}$

How many pairs of adjacent sides does a hexagon have ?

• 4

• 6

• 8

• 5

Tags

CCSS.5.G.B.3

CCSS.5.G.B.4

What is the minimum interior angle possible for a regular polygon ?

• 100

• 60

• 120

• 80

Tags

CCSS.HSG.CO.A.1

What is the formula for finding angle sum of a polygon if n is the number of sides ?

• (n-1)x180

• (n+1)x180

• (n-2)x180

• (n+2)x180

A circle is a ?

• Simple closed curve

• Simple curve

• polygon

• open curve

Tags

CCSS.HSG.CO.A.1

The quadrilateral whose diagonals bisect at right angles is ?

• rectangle, trapezium

• parallelogram, rectangle

• square, rhombus

• parallelogram, trapezium

Tags

CCSS.HSG.CO.C.11