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What is the definition for an acute triangle?
An acute triangle is a triangle with all angles acute (for example, a triangle with angles 64 ,36, and 80). An acute angle is an angle less than 90 degrees. Also, all angles in a triangle MUST sum to 180 degrees.
What is the angle sum of the sizes of the acute angles of a right angled triangle?
A right angle triangle has a 90 degree angle and two acute angles and the 3 angles add up to 180 degrees
What shape has 2 right angles 2 acute angle?
No shape does. If a shape has four angles, the sum of the four angles is 360°. If two are right angles, their sum is 2 x 90° = 180°, leaving 360° - 180° = 180° for the two remaining angles. An acute angle is less than 90°, so the sum of two acute angles is less than 90° + 90° = 180°, but in this shape their sum must be equal to 180°; thus no shape can exist. If one angle is acute and the other is obtuse, then their sum can be 180° and the shape is a trapezium.
Can two angles whose sum is a straight angle be acute?
If you mean a 180o angle, which is represented as a straight line, then no. Two acute angles cannot add up to 180o because an acute angle is less than 90o.
Does the sum of any 2 acute angles have to be an acute angle?
No. An acute angle measures less than ninty degrees, so it is possible to have two angle that when added together that the sum sill equal or exceed 90 degrees.
