If a quadrilateral is a rectangle, then it has four right angles. true or false?

Mathematics

1 answer:

LekaFEV [45]3 years ago

4 0

Answer:

False

Step-by-step explanation:

please mark barinlyest

A rectangle is quadrilateral which has four right angles. A square is both a rhombus and rectangle. Therefore, a square is always rectangle. Hence, the given statement is true. Converse: A quadrilateral is square when a quadrilateral is rectangle. This is false statement. A rectangle is quadrilateral which has four right angles.

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romanna [79]

Answer:

210° , 330°

Step-by-step explanation:

using the sides of the 30- 60- 90 triangle

with legs 1, $\sqrt{3}$ and hypotenuse 2 , then

$sin^{-1}$ $\frac{1}{2}$ = 30° ← related acute angle

since $sin^{-1}$ - $\frac{1}{2}$

then angle is in third / fourth quadrants , then required angles are

180° + 30° = 210° ← in third quadrant

360° - 30° = 330° ← in fourth quadrant

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3 years ago

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OleMash [197]

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3 years ago

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In Exercises 8-10, sketch the figure described.

Lunna [17]

The sketch answers to question 8, 9 and 10 is given in the image attached.

<h3>What is an intersecting lines?</h3>

A link is known to be intersecting if two or more lines are said to have cross one another in a given plane.

Note that the intersecting lines are known to be one that often share a common point, and it is one that can be seen on all the intersecting lines, and it is known to be the point of intersection.

Looking at the image attached, you can see how plane A and line c intersecting at all points on line c and also GM and GH and line CD and plane X as they are not intersecting

Therefore, The sketch answers to question 8, 9 and 10 is given in the image attached.

Learn more about intersecting lines from

brainly.com/question/2065148

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