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What is the midpoint?

A

The middle of a line segment

B

The point of intersection of the medians

C

The point of intersection of the altitudes

D

None of these

If you draw a median from point A. Where does the median intersect the x-axis?

A

(0, 0)

B

(2, 0)

C

(3, 0)

D

(5, 0)

If you draw an altitude from point A. Where does the it intersects the x-axis?

A

(0, 0)

B

(2, 0)

C

(3, 0)

D

(5, 0)

Right-angled triangle

Equilateral triangle

Isosceles triangle

Can you draw a triangle that has

two obtuse angles?

two obtuse angles?

A

Yes

B

No

The sum of the angles in a quadrilateral are always ...

If angle D = 80 degrees. What is angle A then?

Calculate angle S1.

+ Calculations

+ Calculations