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Geometry Quiz 9

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Test your Grade 9 geometry

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Kenya

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Geometry Quiz 9
 

Geometry Quiz 9Online version

Test your Grade 9 geometry

by Mutuku Charles
1

What is the area of a triangle with base 6 and height 4?

2

In a right triangle, if legs are 3 and 4, what is the hypotenuse?

3

If two triangles are similar with sides in 2:5, what is the scale factor for corresponding sides?

4

The area of a circle with radius 5 is?

5

Perimeter of a rectangle 7 by 4?

6

If a trapezoid has bases 8 and 3 and height 4, its area is?

7

The sum of interior angles of a pentagon is?

8

What is the slope of a horizontal line?

9

In a circle, what is the radius if diameter is 14?

10

If two lines are parallel and cut by a transversal, corresponding angles are?

Feedback

Area = 1/2 × base × height = 1/2 × 6 × 4 = 12; other options double or misapply formula.

3-4-5 triangle; hypotenuse is √(3^2+4^2) = 5. Other options are not correct Pythagorean results.

Similar triangles have equal scale for all sides; 2:5 is 0.4, not 2 or 5/2.

Area = πr^2 = π×25 = 25π; others use incorrect radius or formula.

P = 2(a+b) = 2×(7+4) = 22; others miscount sides or double wrongly.

Area = 1/2 × (b1+b2) × h = 1/2×(8+3)×4 = 22; others misapply height or average.

Formula: (n-2)×180; (5-2)×180 = 540. Other values match other polygons.

Horizontal line has rise 0, run nonzero, slope 0; vertical line undefined slope.

Radius is half the diameter; others are misinterpretations or halves again.

Corresponding angles formed by a transversal with parallel lines are equal; others sum to 180 or 90.

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