What type of angle measures less than 90 degrees?, Obtuse, Acute, Right, What is the total measure of angles on a straight line?, 90°, 180°, 160°, Which of the following is true about perpendicular lines?, They never meet, They intersect at the angle of 90°, They form an acute angle, What is the measure of a right angle?, 90°, 180°, 45°, Which of the following is an example on intersecting lines?, Train tracks, A plus sign, A ruler

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