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3 years ago

Which description does NOT guarantee that a quadrilateral is a rectangle?

Mathematics

1 answer:

Kisachek [45]3 years ago

8 0

Answer: A

a quadrilateral with all four angles right

Step-by-step explanation:

A quadrilateral is a rectangle if a quadrilateral has all four angles right,

a parallelogram with congruent sides

a quadrilateral with diagonals that are congruent and bisect each other

a quadrilateral with all congruent angles. Because a rectangle possesses 2 pairs of parallel sides, 4 right angles at 90°. It has opposite sides which

are parallel and congruent. And all its angles are congruent.

But a quadrilateral with all four angles right is a description that does NOT guarantee that a quadrilateral is a rectangle. Because this description is also applicable to a square.

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Find the perimeter of the shape below:

skad [1K]

Add all sides

use distance formula to fnd distance: sqrt((x1-x2)^2+(y1-y2)^2)
if is wrong,i'm sorry,i think this is right

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3 years ago

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The average (arithmetic mean) of 5,10,15 and x is 20..What is the x ?

ruslelena [56]

$Ave=\frac{sum}{count}$
$20=\frac{5+10+15+x}{4}$
$80=30+x$
$x=50$

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3 years ago

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Find the lateral area of the square pyramid.<br> please help ill mark as brainlest!

kozerog [31]

You have a base that is 8x8 and the slant height of the triangle is 22.

This is the formula, L=1/2Ph

H = 22 Meters

1. P=2L+2W -> 2(8)+2(8) = 32 meters

2. L= 1/2(32)(22) = 352 meters squared :)

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2 years ago

A tether ball is attached to the top of a 15-foot pole. Maddy holds the ball 3 feet off the ground and 4 feet from the pole. How

givi [52]

Answer:

15.52 ft

Step-by-step explanation:

the length of the rope can be determined using Pythagoras theorem

The Pythagoras theorem : a² + b² = c²

where a = length

b = base

c = hypotenuse

√15² + 4²

= √225 + 16

=√ 241

= 15.52 ft

4 0

2 years ago

Find the surface area of the square pyramid if the slant height is 13mm and the base length is 11mm

FromTheMoon [43]

Answer:

The surface area of the square pyramid if the slant height is 13mm and the base length is 11mm is 407 sq.mm.

Step-by-step explanation:

Slant height of square pyramid = l = 13 mm

Base length of square pyramid = b = 11 mm

Formula of surface area of square pyramid = $b^2+2bl$

Substitute the values in the formula :

Surface area of square pyramid = $11^2+2(11)(13)$

Surface area of square pyramid =407 sq.mm.

Hence the surface area of the square pyramid if the slant height is 13mm and the base length is 11mm is 407 sq.mm.

3 0

3 years ago